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For Best Hydroponics We Recommend the Following Mixture:

2 parts of Master Blend with 2 parts of Calcium Nitrate and 1 part of Magnesium Sulfate

Depending on which crop you are growing you will need 5 to 6 grams of mixture per gallon. If you don't have a grams weighing scale - A rounded teaspoon is right at 6 grams.
Also, there are 453 grams to a pound.


A Note About Our Shipping. Our products have free shipping for U.S.A and territories. We use Priority Mail, with tracking, which gets your order to you quickly. We try for next working day shipping. However, during busy gardening supply times may take up to 3 working days. Free Shipping is only for U.S.A and territories.

NOTE: We DO NOT offer international shipping.


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Masterblend is manufactured from the highest quality technical grade materials available. But that's not the only key to producing the highest quality water soluble fertilizer a grower can buy....Masterblend's secret ingredient is Balance.

All greenhouse crops require balanced nutrition for optimum growth rate, predictable blooming response, and maximum resistance to disease. Masterblend offers your plants the proper balance of major and minor nutrients in precise proportions, which allows you to achieve consistent and predicable finished crops for market.

CONVENIENCE

Masterblend has a double layer poly bag for added protection.

MICRONUTRIENTS

All formulations of Masterblend water soluble fertilizer contain a balance of trace elements necessary for optimum plant growth and in a form that's completely available to plants. Important micronutrients contained in Masterblend are as follows:

  • Boron (B)
  • Manganese (Mn)
  • Zinc (Zn)
  • Copper (Cu)
  • Molybdenum (Mo)
  • Magnesium (Mg)
  • Iron (Fe)

    Masterblend is free of excess salts and other chemical impurities which can damage both roots and foliage.

    This means (used as directed) Masterblend is safe for even the most delicate greenhouse crop. A full range of available micronutrients, compatibility with other important horticultural chemicals, and freedom from excess salts make Masterblend´┐Ż water soluble fertilizer the grower's best friend. From seedlings to sale, you can use Masterblend fertilizer with complete confidence.

    SOLUBILITY

    Masterblend water soluble fertilizers are manufactured to provide complete solubility in all types of water. This means no matter what type of sprayer or injector you're using, you can switch to Masterblend fertilizer with complete confidence. The exclusive process by which Masterblend fertilizers are formulated results in 100% solubility-even in cold water! Of Course the warmer the water, the faster Masterblend will go into solution. Even at rates of 2-4 pounds of Masterblend in one gallon of water, the fertilizer remains in solution.

    HEALTH RISKS OF USING MASTERBLEND - May hurt back carrying all of the heavy bags of vegetables from the garden to the house. Take pain reliever 30 minutes before harvest.


    We re-package Masterblend fertilizer in 1, 2, 4, 5, 10, 25 and 50 pound packages for your individual needs. 25 pound bag is not re-packaged.

    We also now offer pre-mixed and tri packed fertilizer blends below for your convenience.


    masterblend fertilizer

    re-packaged masterblend fertilizer

    Masterblend has gained immense popularity for its success rates in hydroponic growing.

    Masterblend the fertilizer you need to get the job done better. Hydroponic Fertilizer 4-18-38

    Select Amount [Free Shipping]


    We only use greenhouse grade Calcium Nitrate. Smaller particles, Easier to measure and mix. Quicker disolving.

    We re-package calcium Nitrate in 1, 2, 4, 5, 10, 25 and 50 pound packages for your individual needs.

    calcium nitrate

    re-packaged calcium nitrate
    Select Amount [Free Shipping]


    We re-package Magnesium Sulfate in 1, 2, 4, 8, 12.5, 25 and 50 pound packages for your individual needs.

    magnesium sulfate
    Select Amount [Free Shipping]


    dynamic duo

    dynamic duo masterblend dynamic duo calcium nitrate

    Get the two main fertilizers (Masterblend and Calcium Nitrate) in One Order! Get your own Magnesium sulfate (Epsom Salts) Save money!

    Select Amount [Free Shipping]


    We offer a pre-mix formula because some growers prefer it.

    However, pre-mix formulations might result in the Calcium Nitrate precipitating (breakdown) into non-soluble gypsum that plants cannot absorb (nutrient lockout).

    To get the best results we recommend getting the individual components above and below the pre-mix section and follow the 3 easy steps below:

    Greenhouse Grade Hydroponics Solution

    For growing Tomatoes and Peppers:

  • 12 grams - Masterblend
  • 12 grams - CaNO3 (Calcium Nitrate)
  • 6 grams - MgS (Magnesium Sulfate)
  • Quantity of water: 5 gallons

    For growing Lettuce, Mustard, Pechay, green leafy vegetables:

  • 10 grams - Masterblend
  • 10 grams - CaNO3
  • 5 grams - MgS
  • Quantity of water: 5 gallons

    For Best Hydroponics We Recommend the following mixture:

    2 parts of Master Blend with 2 parts of Calcium Nitrate and 1 part of Magnesium Sulfate

    Depending on which crop you are growing you will need 5 to 6 grams of mixture per gallon. If you don't have a grams weighing scale - A rounded teaspoon is right at 6 grams.

    To get the best results we recommend getting the individual components and follow the 3 easy steps below:

  • 1st. Thoroughly mix each of the ingredients separately in their own container with water.

  • 2nd. Thoroughly mix the Magnesium Sulfate mixture with the Masterblend mixture.

  • 3rd. Lastly, thoroughly mix the Calcium Nitrate mixture with the Masterblend and Magnesium Sulfate mixture.

  • Mix 12 grams Masterblend in a gallon or so of water
  • Mix 12 grams Calcium Nitrate in a gallon or so of water
  • Mix 6 grams Magnesium Sulfate in a gallon or so of water
  • Then proceed with steps 2 and 3 above in a 5 gallon container and fill up with water to total 5 gallons.


    masterblend

    masterblend calcium nitrate magnesium sulfate

    masterblend

    PRE-MIXED! Hydroponic Masterblend Fertilizer Pre-Mix 20-18-38 NPK For Vegetables 2 Pounds PRE-MIXED! Ready to go... Complete Hydroponic Vegetable fertilizer 20-18-38 NPK, all micro and macro nutrients included. This formula has Masterblend and greenhouse grade Calcium nitrate and Magnesium sulphate added. PRE-MIXED - just add water.

    Makes 200 gallons of Greenhouse grade solution.

    Easy to mix with water. Just add a teaspoon per gallon of water.

    Select Amount [Free Shipping}


    triple max nutrition

    masterblend magnesium sulfate calcium nitrate

    masterblend tripak

    Tri-Pack - Get All Three In One Order! 1 pound Masterblend 4-18-38, 1 pound Calcium Nitrate, and 1/2 pound Magnesium Sulfate.

    The perfect trio for plant growth...


    If you need all 3 you can combine the order versus buying separate. We save on shipping and pass it on to you in this great price. Masterblend is the choice for hydroponics. Works great in soil too. Your plants love it and grow like crazy. 

    1 pound of Masterblend, 1 pound of Calcium Nitrate and 1/2 pound of magnesium sulfate.

    SHIPPING

    USPS Priority Mail.

    We ship to all of USA including APO/FPO, Alaska, Hawaii, US Protectorates addresses and to PO boxes.

    Priority shipping takes 2 to 3 business days in most cases.

    Your order is carefully packed and extra taped to insure that you receive it undamaged.

    Tracking information is sent to you so that you will know when to expect your order to be delivered.

    Only $21.50 - FREE SHIPPING


    triple max nutrition

    masterblend magnesium sulfate calcium nitrate

    masterblend tripak

    Tri-Pack - Get All Three In One Order! 2 pounds Masterblend 4-18-38, 2 pounds Calcium Nitrate, and 1 pound Magnesium Sulfate.

    The perfect trio for plant growth...


    If you need all 3 you can combine the order versus buying separate. We save on shipping and pass it on to you in this great price. Masterblend is the choice for hydroponics. Works great in soil too. Your plants love it and grow like crazy. 

    2 pound of Masterblend, 2 pound of Calcium Nitrate and 1 pound of magnesium sulfate.

    SHIPPING

    USPS Priority Mail.

    We ship to all of USA including APO/FPO, Alaska, Hawaii, US Protectorates addresses and to PO boxes.

    Priority shipping takes 2 to 3 business days in most cases.

    Your order is carefully packed and extra taped to insure that you receive it undamaged.

    Tracking information is sent to you so that you will know when to expect your order to be delivered.

    Only $29.95 - FREE SHIPPING


    triple max nutrition

    masterblend magnesium sulfate calcium nitrate

    masterblend tripak

    Tri-Pack - Get All Three In One Order! 4 pounds Masterblend 4-18-38, 4 pounds Calcium Nitrate, and 2 pounds Magnesium Sulfate.

    The perfect trio for plant growth...


    If you need all 3 you can combine the order versus buying separate. We save on shipping and pass it on to you in this great price. Masterblend is the choice for hydroponics. Works great in soil too. Your plants love it and grow like crazy. 

    4 pounds of Masterblend, 4 pounds of Calcium Nitrate and 2 pounds of magnesium sulfate.

    SHIPPING

    USPS Priority Mail.

    We ship to all of USA including APO/FPO, Alaska, Hawaii, US Protectorates addresses and to PO boxes.

    Priority shipping takes 2 to 3 business days in most cases.

    Your order is carefully packed and extra taped to insure that you receive it undamaged.

    Tracking information is sent to you so that you will know when to expect your order to be delivered.

    Only $45.95 - FREE SHIPPING


    triple max nutrition

    masterblend magnesium sulfate calcium nitrate

    masterblend tripak

    Tri-Pack - Get All Three In One Order! 10 pounds Masterblend 4-18-38, 10 pounds Calcium Nitrate, and 5 pounds Magnesium Sulfate.

    The perfect trio for plant growth...


    If you need all 3 you can combine the order versus buying separate. We save on shipping and pass it on to you in this great price. Masterblend is the choice for hydroponics. Works great in soil too. Your plants love it and grow like crazy. 

    10 pounds of Masterblend, 10 pounds of Calcium Nitrate and 5 pounds of magnesium sulfate.

    SHIPPING

    USPS Priority Mail.

    We ship to all of USA including APO/FPO, Alaska, Hawaii, US Protectorates addresses and to PO boxes.

    Priority shipping takes 2 to 3 business days in most cases.

    Your order is carefully packed and extra taped to insure that you receive it undamaged.

    Tracking information is sent to you so that you will know when to expect your order to be delivered.

    Only $79.95 - FREE SHIPPING


    OTHER THINGS YOU MIGHT NEED

    organic heirloom seeds

    Check out our organic heirloom seeds HERE!

    Organic Seed Mart

    Bulk Sales Of Organic And Heirloom Seeds.

    Our Organic seeds are stable, hybrid and heirloom, open-pollinated. Heirloom varieties means you can save some seeds from your yearly harvest that you can grow the following year producing the same type year after year. Our goal is a world with non- GM food.


    100% Food Grade Diatomaceous Earth

    Dryacide Diatomaceous Earth

    Diatomaceous Earth

    Diatomaceous Earth

    To give you an idea how much is weight vs. volume - Above - This is 5 pounds - almost 2 1/2 gallons.

    Safe, Edible insecticide for your plants!

    Kills bugs, healthy for you.

    Dryacide is a harmless, non-toxic amorphous silica powder that absorbs the wax on insects. Without their wax coating, insects quickly dry out and die. This non-chemical approach to insect control offers major benefits:

    Treated commodities remain chemical and residue free. This is an important issue for Organic Growers, Exporters and other producers of residue-free food products. Dryacide is approved for use by Australia's largest Organic Growers Association.

    100 percent effectiveness against common insect species including those resistant to chemical insecticides

    "FOOD GRADE" Organic Diatomaceous Earth for Weight Loss, Dry Skin, Joint Pain, Detox, Hair, Skin, and Nails SO MANY HEALTH BENEFITS & KILLS BUGS NATURALLY NON-TOXIC GREAT INTERNALLY & EXTERNALLY FOR HUMANS AND PETS

    Re-packaged in smaller bags for your convenience. Free shipping as always!

    Select Amount [Free Shipping]


    Dryacide requires an air stream to move it onto surfaces and into crevices. For economy and efficiency, we recommend bellows-type dusters.

    hand bellow duster

    Only 38.95 Free Shipping!


    Incredibly Strong Vine Clips

    These simple, yet incredibly strong vine clips are used to support the weight of the plant as it grows larger and begins producing fruits or flowers. The back of the clip clamps securely to a piece of twine you hang from your ceiling or greenhouse rafters, while the clip itself then fits loosely around the stem of the plant.

    vine clip illustrated vine clip

    The clip is designed to hold the twine tightly and won't slip. The clips are a must with heavy plants like tomatoes or cucumbers

  • UV stabilized for long life
  • White Color
  • Easy to install and remove
  • Reusable

    Select Amount [Free Shipping]


    NET POTS

    net-pots

    Great quality net pots are thicker and more heavy-duty than most on the market. These will last for years and can be reused many times. Smaller mesh allows the grower to use virtually all types of grow media. Perfect for Expanded Clay or Coco Coir.

    Select Amount [Free Shipping]

    Select Amount [Free Shipping]


    Hole Saw

    net-pot hole cutter

    Easily make holes of any size for your net pots in just about any material.

    18 piece hole saw set. Cuts all of these sizes: 3/4 in., 1 in., 1-1/8 in., 1-1/4 in., 1-1/2 in., 1-3/4 in., 2 in., 2-1/8 in., 2-1/2 in., 3 in., 3-1/2 in., 4 in., 5 in.

    Cut rounded holes in wood, plastic, PVC and ABS with this hole saw set! The set cuts to a depth of 1 in.. Features include a black oxide finish to prevent rust and pilot bit with a 135 degree split point for fast, skate-free penetration! With this powerful hole saw set, you'll be able to drill large diameter holes quickly and efficiently.

  • Cuts to a depth of 1 in.
  • Pilot bit with 135 split point for fast, skate-free penetration
  • Black oxide finish to prevent rust
  • 6 - 7 teeth per inch

    Only $39.95 - Free Shipping


    Coconut Coir Net Pot Growing Medium

    coconut coir brick

    Coconut Coir is a sustainable and rapidly renewable alternative to expanded clay. Use coconut coir anytime you would otherwise use expanded clay. The fibers used in coconut coir are found between the internal hard shell and the outer coat of the coconut. The microscopic coconut husk fibers resemble hollow straws which means that they can absorb and hold about 8 times their weight in water. Air circulates in the space between the fibers so that the coir remains light and does not become soggy when wet.

  • There are many benefits to using coconut coir instead of expanded clay or peat moss:
  • Coconut coir is free of bacteria and fungal spores so it will not introduce diseases into the garden or greenhouse.
  • It is easy to hydrate and retains moisture in quick draining soil.
  • Has a pH of between 5.6 and 7.8. This pH allows plant roots to easily absorb nutrients.

    One brick is enough for many net pots. The brick is compressed and feels hard. You simply break off how much you want, put it around your plant in the net pot, then moisten and it gets soft.

    Our preferred choice is coconut coir rather than expanded clay.

    Coconut Coir 1.4 pound brick - free shipping

    Select Amount [Free Shipping]


    Hydroponic Gardening Medium Grow Rock - Expanded Clay Pellets

    expanded clay pellets

    An incredibly resourceful growing material, is derived from clay. Clay itself is renewable and plentiful making ViaStone a premium growing medium due to its ecologically sustainable quality. Use expanded clay virtually anywhere: the greenhouse, in propagation systems, for outdoor gardening, around shrubs and trees, as compost aeration, or as a hydroponic growing medium.

  • pH neutral, porous, lightweight and reusable
  • Accelerates blooming and maturing
  • Pellets drain freely without holding excess water
  • Provides high oxygen levels around the root, especially useful in a flood and drain hydroponic systems
  • If you like hydroton and leca stone, you will love this product

    Expanded Clay Pellets - free shipping

    Select Amount [Free Shipping]



    The pH and electro-conductivity values specified here are given as a broad range. It should be noted that specific plant requirements will vary according to regional climatic conditions, and from season to season within that region. These values are intended for Hydroponic plants only (soil grown plants will differ). Electro-Conductivity (EC) or Conductivity Factor (cF) can be expressed as either milliSiemens (mS), cF, or parts per million (PPM) 1 mS = 10cF = 700ppm.


    Vegetables
    Plants pH cF EC PPM
    Ambra radicchio 5.5-6.5
    Artichoke 6.5-7.5 8-18 0.8-1.8 560-1260
    Asparagus 6.0-6.8 14-18 1.4-1.8 980-1260
    Bean (Common) 6.0 20-40 2-4 1400-2800
    Beans (Italian bush)  6.0-6.5
    Beans (Lima) 6.0-6.5
    Beans (Pole) 6.0-6.5
    Beetroot 6.0-6.5 8-50 0.8-5 1260-3500
    Broad Bean 6.0-6.5 18-22 1.8-2.2 1260-1540
    Broccoli 6.0-6.5 28-35 2.8-3.5 1960-2450
    Brussell Sprout 6.5-7.5 25-30 2.5-3.0 1750-2100
    Cabbage 6.5-7.0 25-30 2.5-3.0 1750-2100
    Capsicum 6.0-6.5 18-22 1.8-2.2 1260-1540
    Carrots 6.3 16-20 1.6-2.0 1120-1400
    Cauliflower 6.0-7.0 5-20 0.5-2.0 1050-1400
    Celery 6.5 18-24 1.8- 2.4 1260-1680
    Collard greens 6.5-7.5
    Cucumber 5.8-6.0 17-25 1.7-2.5 1190-1750
    Eggplant 5.5-6.5 25-35 2.5-3.5 1750-2450
    Endive 5.5 20-24 2.0-2.4 1400-1680
    Fodder 6.0 18-20 1.8-2.0 1260-1400
    Garlic 6.0 14-18 1.4-1.8 980-1260
    Leek 6.5-7.0 14-18 1.4-1.8 980-1260
    Lettuce 5.5-6.5 8-12 0.8-1.2 560-840
    Marrow 6.0 18-24 1.8-2.4 1260-1680
    Okra 6.5 20-24 2.0-2.4 1400-1680
    Onions 6.0-6.7 14-18 1.4-1.8 980-1260
    Pak-choi 7.0 15-20 1.5-2.0 1050-1400
    Parsnip 6.0 14-18 1.4-1.8 980-1260
    Pea 6.0-7.0 8-18 0.8-1.8 980-1260
    Peas (Sugar) 6.0-6.8
    Pepino 6.0-6.5 20-50 2.0-5.0 1400-3500
    Peppers 5.8-6.3 20-30 2.0-3.0 1400-2100
    Bell peppers 6.0-6.5 20-25 2.0-2.5 1400-1750
    Hot Peppers 6.0-6.5 30-35 3.0-3.5 2100-2450
    Potato 5.0-6.0 20-25 2.0-2.5 1400-1750
    Pumpkin 5.5-7.5 18-24 1.8-2.4 1260-1680
    Radish 6.0-7.0 16-22 1.6-2.2  840-1540
    Spinach 5.5-6.6 18-23 1.8-2.3 1260-1610
    Silverbeet 6.0-7.0 18-23 1.8-2.3 1260-1610
    Sweet Corn 6.0 16-24 1.6-2.4 840-1680
    Sweet Potato 5.5-6.0 20-25 2.0-2.5 1400-1750
    Swiss chard 6.0 6.5
    Squash (Summer) 5.0-6.5
    Squash (Winter) 5.0-6.5
    Taro 5.0-5.5 25-30 2.5-3.0 1750-2100
    Tomato 5.5-6.5 20-50 2.0-5.0 1400-3500
    Turnip 6.0-6.5 18-24 1.8-2.4 1260-1680
    Zucchini  6.0 18-24 1.8-2.4 1260-1680

    As a general rule, plants will have a higher nutrient requirement during cooler months, and a lower requirement In the hottest months. Therefore, a stronger nutrient solution should be maintained during winter, With a weaker solution during summer when plants take up and transpire more water than nutrients.



    PH testing and adjusting kit - Hydroponics Organic

    ph tester

    The Complete pH Testing and Adjusting Kit comes with a pH Test Kit and Crystal pH Up and pH Down. Drops are reliable and simple to use to give an accurate pH reading of your fertilizer solution or reservoir. Fill the test tube about halfway with the solution you are testing, then add a few drops of the pH test indicator and observe the resulting color. Red (acidic) indicates that the pH is too low, blue (alkaline) indicates that the pH is too high, a yellow to a yellow-green indicates an ideal pH. Add the Adjusting Crystals as needed to lower or raise pH.

  • Comes with a pH test kit, crystal pH up, and crystal pH down
  • pH testing drops are reliable and simple to use
  • Red (acidic) indicates that the pH is too low
  • Blue (alkaline) indicates that the pH is too high
  • Yellow to a yellow-green indicates an ideal pH
  • Add the Adjusting Crystals as needed to lower or raise pH

    Only $29.95 - Free Shipping (This item ships 1st class - please allow a couple more days)


    Digital PH Meter - Hydroponics - Fits In Your Pocket

    digital ph meter

    Specification:

  • Measuring pH Range: 0.0 - 14.0 pH
  • Resolution: 0.1 pH
  • Accuracy: 0.1 pH (at 20°C/68°F), 0.2 pH
  • Operating Temperature: 0 - 50°C (32 - 122°F)
  • Calibration: Manual, 1 point
  • Relative Humidity: <95%
  • Life: Approx.700 hours of use
  • Size: 152mm x 30mm x 15mm (5.9x1.2x0.6")
  • Battery: 3*1.5v (AG-13 button battery) (included)
  • Net Weight: Approx. 57g (after installed batteries)

    Only $24.95 - Free Shipping (This item ships 1st class - please allow a couple more days)


    "Kratky Hydroponics"

    We're here to help!

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    ©Copyright 2014-2016. All rights reserved. Kratky Hydroponics´┐Ż.