Jack's Professional 20-20-20 General Purpose Water-Soluble Fertilizer with Micronutrients for Heavy Feeding Plants in Continuous Liquid Feed Programs, 25lbs
4.5 (1,234)
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$70.99$99.99
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Color
Black
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Boost your hydroponic garden with reliable, water-soluble fertilizer! Key Product Features
The General-Purpose Water-Soluble Plant Food 20-20-20, 25 lb. bag is made from balanced nitrogen, phosphorus and potassium for use on all indoor and o...
Reviews
5.0
11 ratings
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Always a tool in my garden
Jack’s 20-20-20 is always used in my garden along with fish emulsion. I have discovered that the two fertilizers give my plants a great dose of nitrogen, phosphorus, and potassium. They grow stronger and healthier.
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Wanda · March 31, 2026
Best ever
I have been growing since the late 70's and have used classic Jacks. It's great fertilizer
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Larry · April 4, 2026
My brother referred me to this product
I never would have guessed for such a large amount of fertilizer and the cost it would work so well . It a fantastic product with great results . The only issue is exposure to air it really draws moisture in quickly so I maintain to properly store the product. I've never had nutrient burn with this product it mixes extremely well with water and the plants just love it . I bought this on a whim because my plants were suffering horribly with miracle grow that little box they sell with blue fertilizer and green measuring spoon . That was just slowly killing my plants . This stuff just . You see the plants responding very quickly and I actually will poke my head in just to see the growth because it's so noticable. I'm glad I spent the money for this product side by side vs the stuff I've been using it just evenly blended and you can tell it's a very good quality product. Smooth , blue, and looks like Kool aid. Don't drink it.