Originally Posted by obscurereef
Maybe it's too much and the top is getting too much light? Is the light a threat to your refugium you mean? I don't think so. Just make sure if they is any dead matter to take it out before it decays and creates waste. I leave mine on all the time. You can do the switched light cycle (fuge lights on at night & DT on during daytime).
yeah that's what I'm thinking maybe to much light on the top? yes I did mean the DT because I I don't want something to transfer from my sump
to my DT I dont think it will, just being cautious. Other parts of the sump theres some type of matter like under neath the filter socks should I siphon it?