Pet Forum / Aquaria / Marine Reef / November 2004

I have a single 400W mh (20k) over my 55 gallon. I have a 65 PC and 15K NO
(actinic) that I could
add aswell. Do I need more variety of light over the tank or is the MH fine
by itself?

I have mostly soft corals, one purple anemone. Fish and clean up crew of
course.

One of the reasons I am asking is that I am getting an outbreak of red
algae, doesn't look like cyno but
it is clumping in the sand an covering some rock. I increased the flow and
did a  partial water change
but I thought maybe the light was to blame since I am skimming and the tank
otherwise seems healthy.

Thanks,
Kelly