I like to change my 175 MH 10K bulb at around 9 months. and Cpt. i would keep the bulb way high for a week to acclimate your softies,and lower it a little everyday.I also wouldnt use the stock FW bulb it came with,they promote algea as it is.Some ppl like to use window screens in layers to acclimate the new (sun) to there tanks! hope i helped a bit.
Deacon
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