1. You should. The rez shouldn't get light. Algae can grow. And small gnomes.
2. 60-70ish if I'm not mistaken. Wait for further input from Brainiac Growers below.
3. That feeding schedule, I'm assuming it's either E&F (ebb and flow) or drip. I haven't grown with either, so I'm not sure. Experimentation, with your custom setup, would be key. Again, which setup are you refering to? E&F? or drip?

Best!

-turtle420
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