Sandbed turning all sorts of colors

[bigchuck33]

This is my first post on this forum. Can anyone suggest a cleanup crew for a 10g that will keep the sandbed clean. I think my main problem is cyanobacteria. It is reddish brown and stringy in some spots. I have been syphoning off as much as possible but I can't get it all, and the sand underneath it has turned green. I am using NSW and RO water for topoff.

TIA

ammonia 0.0
nitrites 0.0
nitrates 5 ppm
2X 10w 50/50 mini compact fluorecents
prizm skimmer

1 ocellaris clown
1 yellow tail damsel
1 stalk red sea xenia
some grape caulerpa

 

[myJUMBOshrimp]

Is it a newer tank set up? I think you are describing "red slime" it looks like a velvet color. I had the same problem when i first started with my 55 gallon, and currently with a smaller newer mini reef 20 gallon tank. Just keep the skimmer running and it will go away in a few. But in the meantime i just lightly stir the sand up and that makes it look good for a few days.

 

[fishfreek]

YOu might need to increase the water flow in your tank. Doing less feedings and increased water changes can help.

One thing that might be a source of problem is the NSW. Its possible the water is polluted or is bringing into the system more nutrients than your system is prepared to handle.

 

[bigchuck33]

Thanks for the advice. I think i'll just wait it out and start mixing my own saltwater just in case thats the problem.