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Maxi Series™

Plant Food General Hydroponics
Where to buy View feedcharts & resources

MaxiGro™ and MaxiBloom™ make up Maxi Series™, a duo of standalone, one-part powdered formulas with primary, secondary and micronutrients. Because these dry nutrients are designed to dissolve quickly in water, they’re highly concentrated formulas that are easy to use, easy to store and easy to love. And since Maxi Series provides elements essential for proper plant nutrition, it helps grow vigorous plants, strong roots and large flowers for great results.

Meet the family

Meet a Maxi Series™ Grower

“Maxi Series is easy to use, cost effective, and my plants like it. My plants were overall a bit happier, they had a stronger start and therefore finished stronger too.”

John Butcher

Carlos N.

@CALGARYGROWS (link opens in new tab/window) / 100 SQ FT / 3-5 GALLONS A DAY / 35 PLANTS

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Water Soluble Dry Mix

MaxiGro™ and MaxiBloom™ make up Maxi Series, a duo of standalone, one-part powdered formulas with primary, secondary and micronutrients. Because these dry nutrients are designed to dissolve quickly in water, they’re highly concentrated formulas that are easy to use, easy to store and easy to love. And since Maxi Series™ provides elements essential for proper plant nutrition, it helps grow vigorous plants, strong roots and large flowers for great results.

One Part Means One Product At a Time

MaxiGro™ and MaxiBloom™ are each designed to help feed plants what they need in different stages of growth, using only one container at a time. During veg, MaxiGro™’s tailored formula helps encourage growth of seedlings and cuttings, helping provide your plant starts vital nutrition for that crucial time early in development. When it’s time for fruiting and flowering, nutrition is just as easy: Switch to MaxiBloom™. This one-container nutrient helps enhance fruit and flower development and provides nutrients needed for essential oil production and high phosphorus, potassium, magnesium and sulfur.

Hello, Wherever You Grow

From high up in the mountains to out back in your backyard, Maxi Series™ makes getting fertilizer where you need it easy. The dry formulas weigh less than liquid options so you can say goodbye to lugging heavy bottles or paying for heavy shipping. Dry means easier to store, too. Just secure the bag and stash it inside, outside or wherever’s most convenient for you, following storage directions. Less space, more possibilities.

For use with

Plants

  • Hemp
  • Vegetables
  • Herbs
  • Fruits
  • Flowers
  • Other high value crops

Media

  • Rockwool
  • Potting mix
  • Coco
  • Peat lite mix
  • In-ground soil
  • Water culture

Environments

  • Indoors
  • Outdoors

Experience

  • Beginner
  • Intermediate
  • Expert

Maxi Series Feed Charts

Whether you’re a commercial grower or a hobbyist, the Maxi Series Feed Charts are the easy and precise way to give your plants what they need, when they need it, without the guesswork. Download them today for a better grow tomorrow.

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FAQs

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  • Our Feedchart Usage Guide explains how to interpret and use General Hydroponics® Pro Feedcharts. It is intended as a companion piece to General Hydroponics® Pro feedcharts for FloraPro®, FloraSeries®, and Maxi Series™.

  • Absolutely! All of our nutrient blends contain the necessary elements for plant growth. Start with the formula ratios identified on the label for the specific plant or crop you are growing, and then adjust and experiment until you find the right formula for your specific need.

    For further information, refer to our feedcharts.

  • pH is a measure of the hydronium ion H3O+. It is based on a logarithmic scale from 0 to 14. “Pure” water has a pH of 7.0. If the pH is less than 7, the solution is acid. If the pH is greater than 7 it is alkaline. Because the scale is logarithmic and not linear, a pH of 6 indicates ten times more H protons than a pH of 7, and a pH of 5 indicates 10 times more protons than a pH of 6.

  • Ventilation is often overlooked as a problem. Plants absorb nutrients when the water molecules in the leaves respire (i.e. evaporate). Better ventilation aids a high transpiration rate, which translates into a greater rate of nutrient uptake. Remember that ventilation means changing the air, not just blowing it around the room (circulation).

  • pH is important because it affects availability and absorption of several of the 16 atomic elements needed for plant growth. Maximum absorption of these elements is found at pH readings 5.5 to 6.5. When pH falls below this range many of the macro elements (N, P, K (link opens in new tab/window)) have less availability, and absorption of the micro nutrients can reach toxic levels.

  • Water containing too much calcium and magnesium (called “total Hardness”) may create serious problems. Contact your municipal water supplier who can provide you with an analysis of your water supply. If you are using well water, many laboratories can provide you with an analysis if you send them a sample. If the dissolved salts in your water supply measure 200 ppm or more, we strongly recommend that you obtain a water analysis to determine calcium content. Excessive calcium is the main factor in determining if your water is hard. If an analysis of your water supply reveals that the Calcium content of your water supply is greater than 70 ppm (mg/liter) you should use Hardwater FloraMicro. Hardwater FloraMicro provides rapidly growing plants with a combination of chelated micro nutrients uniquely formulated for hardwater conditions. Other options are to collect rainwater, install a reverse osmosis filtration system, or use purified water. Do not use mineral or “spring” water, which can unbalance the nutrient solution, or even be toxic to plants.

Our Feedchart Usage Guide explains how to interpret and use General Hydroponics® Pro Feedcharts. It is intended as a companion piece to General Hydroponics® Pro feedcharts for FloraPro®, FloraSeries®, and Maxi Series™.

Absolutely! All of our nutrient blends contain the necessary elements for plant growth. Start with the formula ratios identified on the label for the specific plant or crop you are growing, and then adjust and experiment until you find the right formula for your specific need.

For further information, refer to our feedcharts.

pH is a measure of the hydronium ion H3O+. It is based on a logarithmic scale from 0 to 14. “Pure” water has a pH of 7.0. If the pH is less than 7, the solution is acid. If the pH is greater than 7 it is alkaline. Because the scale is logarithmic and not linear, a pH of 6 indicates ten times more H protons than a pH of 7, and a pH of 5 indicates 10 times more protons than a pH of 6.

Ventilation is often overlooked as a problem. Plants absorb nutrients when the water molecules in the leaves respire (i.e. evaporate). Better ventilation aids a high transpiration rate, which translates into a greater rate of nutrient uptake. Remember that ventilation means changing the air, not just blowing it around the room (circulation).

pH is important because it affects availability and absorption of several of the 16 atomic elements needed for plant growth. Maximum absorption of these elements is found at pH readings 5.5 to 6.5. When pH falls below this range many of the macro elements (N, P, K (link opens in new tab/window)) have less availability, and absorption of the micro nutrients can reach toxic levels.

Water containing too much calcium and magnesium (called “total Hardness”) may create serious problems. Contact your municipal water supplier who can provide you with an analysis of your water supply. If you are using well water, many laboratories can provide you with an analysis if you send them a sample. If the dissolved salts in your water supply measure 200 ppm or more, we strongly recommend that you obtain a water analysis to determine calcium content. Excessive calcium is the main factor in determining if your water is hard. If an analysis of your water supply reveals that the Calcium content of your water supply is greater than 70 ppm (mg/liter) you should use Hardwater FloraMicro. Hardwater FloraMicro provides rapidly growing plants with a combination of chelated micro nutrients uniquely formulated for hardwater conditions. Other options are to collect rainwater, install a reverse osmosis filtration system, or use purified water. Do not use mineral or “spring” water, which can unbalance the nutrient solution, or even be toxic to plants.

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