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10k MH VS 20K MH (400 watt)
My tank seems to have had more growth with the 10K bulb than the 20k bulbs I am running now. I have two 400 MH's and 4 six foot VHo's that are actinics on a 150 gal. tank. I noticed most of the coral outlets are all using 20k's now and wondered if anyone had any input on why I am seeing this. Its time for new bulbs and was considering a 14k bulb. Any thoughts? Thanks!
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