Quote:
Originally Posted by Tracey2
Great advice, thanks. That is why I was considering the Lumatek dimmable ballast, to keep options open. Is there any reason someone would go from 400w to 250's? Does anyone have any pictures of their galexy run 400w radiums?
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You may never use the 250W or one day you may find you don't need 400W to light your tank. Perhaps one day you will find that a newer ballast comes on the market and you want to use your Galaxy ballasts for a frag tank but only need 250W. Or, maybe a bulb will come on the market that is all the rage but only comes in 250W. Personally, if I'm going with a single ballast I'd pay the slight bit more and get the selectable ballast. If there is a dual 400W e-ballast out there you might want to save money by using that instead of 2 separate ballasts but with a dual ballast, if it fails you'll lose both bulbs whereas with 2 ballasts, you'll still have a backup. For me, I run 2x 250W Radiums. I hate the blue colour, to be honest, but I used to run 400W Iwasakis and that was really yellow (but I got amazing coral growth).
Resale on the selectable is probably better, too, but I'm not sure.