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I believe that the only requirement is that they are the same wattage. MV and MH are essentially the same concept. I haven't had a chance to try it yet, but I have a pretty good feeling it will work.

Well, I've gone ahead and germed a few more seeds, five came out of the ground. I've got my HPS bulb installed in my flower box now, and I'm currently working on getting my veg box up and running. That ugly box you see will soon be my veg box, and it will have a 100w MH bulb in it.

You can however run a halide bulb in a mercury vapor ballast, I guess they are the same thing.

I think your problem is that you have a seedling 45 cm away from a 400 watt light, thats pretty intense.

The more I think about it, the more solid the idea of boxes sounds.

Pics? How hot is it in there? You need to provide some more information. I would say that 45cm is way to close to a seedling if you are using a 400w HPS or any light for that matter.

I once broke a branch on one of my ladies. I grabbed a band aide and taped it back into place, about a week later she was good as new, no shit.

Here is a thought, go to Costco or something and ask for as many big boxes as they can spare. Box all of your shit up, your plants, lights everything. Call your landlord and tell him to come on over. When he is done with his stuff, unbox everything.

You can totally do it. Here is what I am doing right now: Veg Box: -24"x24"x12" -100w MH bulb, remote ballast -PC fans for cooling (10 for $10 on newegg.com) Flower Box: -30"x18"x18" (its a mini fridge) -70w HPS, remote ballast What I'm doing is vegging in my veg box, taking clones and...

Okay, I've got myself a 100w Mercury Vapor light and ballast, and I just picked up a funky cabinet from Goodwill. Now I'm all set to have two grow boxes running, one veg and one flower. Sweet!

Eh? I'm guessing not, I've done some research and it doesn't sound possible, but I thought I would ask just in case.

Can I run a MH bulb on a MV ballast? This may be a really dumb question, but I managed to get my hands on a 100w Murcury Vapor home security light for like $5 at Goodwill, and I was wondering if I could...

Tried to PM, inbox is full.

Can I run a MH bulb on a MV ballast? This may be a really dumb question, but I managed to get my hands on a 100w Murcury Vapor home security light for like $5 at Goodwill, and I was wondering if I could...

This may be a really dumb question, but I managed to get my hands on a 100w Murcury Vapor home security light for like $5 at Goodwill, and I was wondering if I could just run a MH bulb in that fixture, or I would I need to do something special to get that to work for me? I'm tempted to just run...

I'd post some current pics, but it looks like the photo issue from the server move hasn't been resolved quite yet.

I imagine it would. I tried using bottles of frozen water with my last grow. It worked, but it was a pain.

Yes. I've did something similar in my last grow and I saw a difference.

Going remote ballast was the ticket, temps are way down.

Ha ha, when I opened my grow journal I thought for sure someone was fucking with me. First there was random plants, and the last photo in the thread was of a puppy, and I was like WTF?!