Purple slime algae

[Jlabonte]

37 gallon
60 lbs of rock
40 lbs sand
2 tank raised clowns
1 fire goby
1 crab


I currently have green hair algae and purple slime algae covering my rocks and I do not know how to control it!


Help please!

 

[Ingy]

Both of those problems (cyano bacteria is the other issue you have) are caused by excess nutrients. You're putting in more nutrients (food) than your taking out (skimming and water changes). The algae and bacteria are consuming what is left. Although there are methods to control the problem what you really need to do is find out the cause and eliminate it.
How often do you feed and how much water changes?
Reduce feelings to once every 2-3 days. Are you running anything to reduce nutrients? Any purigen, GFO or anything else? Do you have a skimmer?
For control you can reduce lighting and increase flow on purple cyano areas. But that won't get rid of your problem, it will just hide and/or delay you seeing it.

Good luck