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I tried putting ice in my reservoir, but the temps are still fluctuating. When I get home from work, the ice is melted and the temps are back where they were... But! I found an el cheapo mini fridge on craigslist for like 25 bucks. I'm going to put my reservoir and pump in there, and drill a...

Thanks SableZen and UrbanAerO... VERY good info. I read somewhere that you can safely increase up the cal-mag to any level, but I never considered that it would cause lockout of potassium, so I probably added too much. And the frozen coke bottle is an awesome idea! Where I'm at, the AC would...

A few weeks in veg, and now my plant is dying! Rust brown blotches started forming on the older leaves first, and the root system is turning a dark brown, which I know means root rot... What the hell? The reservoir temp is in the mid 80's and it's around 90 degrees or so under the lights. I...

erm... sorry for the double post. Someone please delete?

So I think these $100+ commercial cycle timers are way overkill for a small-time grower like me. Or the price is overkill, at least. I have come across a mechanical timer sort of like those cheap light timers you see at walmart, except you can set it to turn on/off in 50 second increments. That...

I haven't used that one, but here is a similar 12V blower for 6 bucks: http://www.allelectronics.com/make-a-store/item/CF-372/12VDC-97MM-BLOWER/1.html I don't know the exact cfm, but the amount of air that it moves is almost like a shop vac. Almost as loud, too. I am using a PWM to turn the...