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@petrushka Since its rated for over 3000w, which is far beyond the power you will probably be using. Also probably beyond what any 1 circuit with a 15A breaker will provide. I think it is safe to use that timer for lights as well as the fan.

@her.moore Ok, so right now you are running 1292W worth of stuff on one circuit. I am assuming its all on one 15A breaker, which is fine, and gives you about 398W left over. If you want to add the 2 lights and the Can Fan, which is an additional 1338W, you will need to use a 2nd circuit (or...

Electronic Ballasts are all solid state, that it is all integrated circuits and such, I would think these would last longer than a Ballast with large magnets, inductors and capacitors. Also, the magnets in a magnetic ballast will heat up, and heat kills magnets, so it will be its own downfall...

I wouldn't fork out the money, in my mind, 3rd Generation only means this is there 3rd try at producing a product that will grow plants w/ LED's, and the first 2 generations didn't do too well.

Sounds to me like it will work in either. If you are only going to get 1 ballast, then get one that can do both MH and HPS. You see them on eBay all the time, and I am sure the local hydro shop will have some.

First off, you should know what a Ballast does. The whole purpose of a ballast is to limit current, because gas discharge bulbs won't limit current themselves (they look like a negative resistance), and will just eat up current until it destroys itself, or the breaker/fuse goes. Magnetic...

I'd like to mention some quick things about electricity so we don't have 100s of redundant questions. First off, I'm an EE, so not as knowledgeable as bricktown73 in house wiring, standards and code, but I should be able to help out a bit in the theory. The wiring coming from 1 breaker in your...

Hey guys, I just found another strange bulb from the same eBay store, it is a 400W Metal Halide and High Pressure Sodium in 1 bulb. Check it out...

Hello All, Has anyone ever used HPS bulbs that have a reflective coating on 1 half of it, negating the need for a reflector hood? I found one on eBay and I am tempted to buy 2 of them, 400w each, for a grow box I am designing, so that I can grow about 8 to 10 plants. I also intend on putting...