Could this be used as nutrients in a dwc / hydroponic setup?

SInce it goes into solution easily it can be used in a hydroponic set up. Concentrations will have to be adjusted.

Does this contain micronutrients? Where can I get a detailed list of ingredients?

Ask the manufacturer for an OSHA sheet. All fertilizers are requrired to submit a full chemical breakdown listed for OSHA which must be supplied to the public on request. These sheets are requested by toxicologists in the ER.

Do you solve it in the watering water or are these timed release granules? The product image and the description sort of contradict each other.

This water soluble fertilizer feeds both the leaf structure, and the root system when applied as directed. It can be used in multiple spray forms,ie; a spray bottle or hose attachment. You can also pour it from a watering can, or a bucket, right on top of your plants. Hope this helps.

What country is this from?

It says right on the container made in Allentown, PA with an American flag . This is really good stuff....get some.

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Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb

Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb

Product ID: 7920573

Details

Brand
Jack's Classic
Item Form
Powder
Item Weight
4 pounds
Liquid Volume
20 liters
Specific Uses For Product
Plant Growth

🌿20-20-20 balanced NPK for rapid green-up

💧Water-soluble powder for easy mixing & max coverage

🧪Micronutrients included for optimal plant health

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Description

🌱 Feed your plants like a pro—because thriving is the new flex!

MICRONUTRIENT BOOST - Includes essential trace elements to keep your plants thriving without extra supplements.
DUAL FEEDING FLEXIBILITY - Use as foliar spray or root feed—adapt to your plant’s needs effortlessly.
BALANCED 20 20 20 FORMULA - Perfectly calibrated NPK ratio for fast leaf expansion and lush greenery.
PRO GRADE TRUSTED STANDARD - Preferred by professional growers and home gardeners alike for decades.
POWDERED CONCENTRATE EFFICIENCY - Mix with water to create up to 20 gallons of nutrient-rich fertilizer—more feed, less waste.

Jack's Classic 20-20-20 All Purpose Fertilizer is a water-soluble powder designed for both indoor and outdoor plants. Featuring a balanced nitrogen, phosphorus, and potassium formula with added micronutrients, it supports rapid green-up and healthy leaf growth. Versatile for foliar or root feeding, it mixes easily to provide up to 20 gallons of nutrient solution, making it a cost-effective, professional-grade choice trusted by gardeners for over 20 years.

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€ 147.32

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Asin	B00KWYHXXQ
Best Sellers Rank	#294 in Garden Fertilizers
Date First Available	October 2, 2000
Item Model Number	52064
Manufacturer	JR Peters
Product Dimensions	1 x 1 x 1 inches; 4 pounds

Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb

Details

Details

Description

Specifications

Common Questions