I've always been told 5.8, and when you look at the uptake graphs, you get the best balance of uptake of all the nutrients.

So for now, I emptied and refilled the res. I currently have about a 1/3 strength thrive alive solution, 1/8th strength foxfarm solution, and a little under half strength earth juice catalyst. Hopefully this will fix the problems, they probably are a bit young for even the half strength nutrient solutions. I'll try to remember to post pics in a couple days.
mountainman Reviewed by mountainman on . is this rust? Or over nute? Ok, so in the pics you can see the plant that's been affected most. It's a lowryder and is in a DWC hydro system. The first true leaves have completely yellowed and remind me of the dying bottom leaves of recently rooted clones. I'm thinking that it's either rust, or over feeding? I was up to about 7.5 mL of foxfarm per gallon, but I backed off to about 5 mL when I saw this problem, perhaps I should go even lower? They're under a 400 watt HPS light right now. I'd appreciate a couple Rating: 5