My new 90gal tank has a relatively low profile canopy as compared to my last setup, and when my retro dual 175w
metal halides came in the mail today I tried to mock them up. The bulbs look like they will come within two or three inches from the surface of the water, and I'm not too thrilled about that. I'm considering using some eggcrate to keep the fish from jumping and splashing the bulbs, but I'm wondering what other problems the bulb height might cause me. Should I be worried about excess heat finding its way into my tank water? I'll be installing a couple fans while I'm putting in the
MH kit, but I'm afraid it might not be enough. Any suggestions?
