booncool
04/28/2006, 12:37 PM
I have been using the 20k MH 400w hamilton(2) in my stony caral aquarium for sometimes now, the coral seems to grow quite well but my acropora started to lose its color from purple to brown, i wonder if this consequence led by the lack of the light intensity or something else? Should i change to the lower kelvin bulb? :confused: