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So I've just gotten my TDS and pH testers, and I'm trying to wrap my head around the readings. My tap water sits at a ph of 7.0 My EC meter reads 42ppm and 89 uS/cm How do I apply that to determine the amount of Canna Vega A+B I should be using? I'm using the calculator found at the canna...

Trying to understand what the best size considerations are for DWC. There are 2 6" net pots in a 25 Gallon tote bin. I estimate 10-15 gallons of water will be in place. Whats the bare minimum output volume i should be considering per net pot? How much becomes overkill? Do I need one stone per...

First off, I am interested in what is required to effectively illuminate my 4x8 tent. 4 plants, DWC. My first plan was to use two Viparspectra 600s, and maybe add a 600w HPS, but I really want to avoid HPS entirely. I considered two Viparspectra 900s, and have been told that performance is...