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Closed? Are you sure about that? I can still see it.

That sounds like a pain in the ass. I don't like the sound of having to adjust more than once a day. pH varies more widely in RO water than tap water, typically. Dissolved minerals in high-TDS water slow the flow of hydrogen in and out of the solution, so pH generally changes faster in...

Interesting - 56 watts on a two-footer? Are they VHOs? Presently, those are slightly beyond my budget, but I can dream... :) I've heard good things about the German bulbs too. I don't know where to find them reliably though - my best source of info told me to just stake out eBay and snipe them...

Already have the fixtures - just looking for the tubes themselves. Also, if you ever find yourself wanting to go over to T5s, buy from a wholesaler. My fixtures cost me less than half of what they're asking at the box stores I've checked, and they have far better reflectors than anything I've...

Here's a question - where can I find a good price on 4-foot high output T5 tubes? Not exactly a question for an electrician, but maybe you know of some wholesalers or something? I'm mostly finding them through greenhouse suppliers, and I'm pretty sure the prices are a little jacked up given that...

So I'm gearing up for my first serious grow and have decided to go with T5s. I don't like the output profile of HID lamps, I don't want to build my own LED panels, and restrike on CFLs is a stupid loss to take when I can afford to just go for real T5s. I found an awesome deal on fixtures but the...