I have bubble algae in my nano, what are my options to get rid of them? I know emerald crabs are hit and miss. If I went with emeralds, how many for a 30g?
How bad is it? If you are able to pull out the rocks for a few here is what worked for me:
Take out the rock and scrape off the bubble algae as much as you can. Then pour a 1:10 solution of hydrogen peroxide solution mixed with water on the effected areas of the rock. Rinse the rock in saltwater and put it back. Sometimes you may need to either do this more then once or increase the H202 strength. There's a lot of info about this on nano reef from a few years back.