torch problem

[sumpfinfishe]

Surface scum is usually a sign of either or a combination of the following:

1>low flow

2>poor or no skimming

3>major die off of live rock, corals, anemones, etc...

Skimming the surface with a cup or shot glass will not remove all the waste in your system, instead bump up the flow and do weekly water changes or add a skimmer. This surface scum can kill other corals as it will build up mucus which will choke out other corals and inverts, your fish won't be too happy as well!