What ph water is best for using this for cannabis and for what stages of growth is it used for ?

you pH your water AFTER you add nutrients and additives.

Is a calmag supplement needed with this for cannabis? and if so what supplement would you recommend

Yes.. mix the jacks and the mag first and after it's dissolved then at cal...

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Nutrients 15-5-20 Tap Water-Soluble Fertilizer for Lowering Water pH for Leaf and Root Growth in Continuous Liquid Feed Programs, 2.2Lbs

Nutrients 15-5-20 Tap Water-Soluble Fertilizer for Lowering Water pH for Leaf and Root Growth in Continuous Liquid Feed Programs, 2.2Lbs

Product ID: 157941928

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Details

Brand
Jack's Classic
Item Weight
2.2 Pounds
Item Form
Powder
Specific Uses For Product
Plant Growth
Manufacturer
Jack's

🌱Water-Soluble Powder

💧15-5-20 Analysis

⚖️Mixing Rate

Description

🌿 Feed Your Green Dreams!

HYDROPONIC HERO - Perfectly designed for continuous liquid feed programs.
EFFORTLESS MIXING - Just mix 13.5 oz in 100 gallons for a powerful feed solution.
LONG LASTING POWER - One 2.2 lbs pack goes further than traditional liquid fertilizers.
MICRONUTRIENT BOOST - Packed with essential micronutrients for robust plant health.
OPTIMIZE YOUR GROWTH - Achieve optimal nutrient absorption with a pH-lowering formula.

Jack's Classic Nutrients 15-5-20 is a premium tap water-soluble fertilizer designed to lower water pH, enhancing nutrient absorption for optimal leaf and root growth. This 2.2 lbs powdered concentrate is perfect for hydroponic systems, providing essential micronutrients without the need for additional feeding.

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