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I'm using a pH test kit for a fish tank where you match the colours. I think it's about 6.1, possibly a little lower. I bought the nutes from a head shop that has a garden section, so it's supposed to good for weed. I've been using at a quarter of the recommended strength since day 1...

It's getting worse! After more research with the leaves curling up, from the bottom leaves to the top leaves, I think it could be lights too close or magnesium. I moved the lights up, I think I'll give some epsom salts for good measure too. The real question is what's the right amount of...

Hi I'm a newbie. The lats 2 days I got little spots on leaves. She's 2 weeks old, hydroponic, pH is about 6.1. I'm using Dutch Nutrient Formula at quarter the recommended strength, CFL's. I'm I panicing for no reason?:o