I'd be grateful for suggestions on how to deal with bubble algae in my 70 gallon tank. It has a 2 foot snowflake eel, a 4 inch toby puffer, two tangs and two damsels. The only coral I'm growing in the tank are zoas. I've got, maybe, 500 polyps or so. I've run the tank for 3-4 years. I tried emerald crabs but it didn't work. I assume eel or puffer was eating them as they disappeared. I tried hand removing. Ultimately I took every rock out. If there were no zoas, I turned into dead rock. If there were zoas I removed all bubble I could and dipped parts of rocks that didn't have zoas on them. When I restarted the system, it seemed clean for a few months but bubble algae reappeared and did so intermixed with zoas so some survived hidden in zoas. Now it has spread everywhere and is squeezing out zoas. I really don't know what to do.