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In response to the original question... From the center of one bulb to the center of another anywhere from 5 feet to 6 feet apart.

What? You don't control your photo period? aka light cycle. It's all good. I see you trolling. I'm hating.

My favorite one is the: "I have a space that is X-by-X, how many plants can I grow." With no other information. No genetics. No light source. No yield expectation. Just completely ignorant to how indoor gardening, and photoperiod control, works.

If it's hot in the apartment, the air which the tent is intaking, then it's going to be hotter in the tent. Doesn't matter how much air you move, if it's over 76 in the apartment it isn't going to be cooler in the tent. There are some obvious ones up front. Like running your lights during the...

I like the GE StarCoat myself. And I totally glazed over the LED in your first post, the language, punctuation, and formatting was a little difficult to navigate and I thought you were talking about the T5 fixtures. LED's are in the same boat as Fluorescents. Great for starting smaller plants...

I got a pretty good deal... about $200... But I kinda, sorta, work for a hydroponics retailer and HydroLogic is like down the street from my house so I picked it all up straight from the manufacturer. The 200 is total overkill for me also, but I get twice the output and that saves me some time...

The thing about the Select-a-watt style ones (Galaxy, SolisTek, a handful of others) is that rather than running only the 1000w bulb you can use a 600w bulb or a 400w bulb and achieve the proper spectrum for that bulb. Sure, you can run the 1000w bulb at "60%" from the ballast and have a reduced...

Hydrologic Stealth RO 200 Complete w/KDF, super simple install, took me longer to take it out of the box and unwrap everything than it did to hook it up. I also picked up a 1:1 flow restrictor to keep the waste water to a minimum. Cuts into the membrane life a little bit but it works great and I...

Dimmable is bullshit. The best ballasts are "select-a-watt" running at 1000w/600w/400w. Although Digital is pretty good stuff. They use about 10% less power, which at the end of the grow could be quite a few $$$ saved. At the end of the ballasts life an Digital Ballast will completely pay for...

It depends on your lighting and how large you'd like the plants to get. Indoors you have control over the photoperiod and you can exploit this to force the plants to flower at your discretion. I would say the bare minimum for 2 plants would be about 18"x12", but you can go as large as the...

Hey dude, The UV-B bulbs are out, they don't really grow plants. There are some results which indicate that UV-B is good for resin production but that wouldn't be until the end of your grow. The T5 fixture you have sounds acceptable to get your plants started with. The issue with T5 lighting is...

Greetings to my fellow growers! Coming at you from a hub of Cannabis gardening straight out of Santa Cruz. I have been growing for the last 10 years, spending the last 6 years working indoors. People tell me I have an expert level knowledge of both Organics and Hydroponics. Also, I work for a...