without a pic its hard to say but sounds like cynobacteria. the bubbles come from a lack of flow. this is a red slime algae which can spread rapidly.
the best way to get rid of it is to get the Mexican red legged hermits, not to be confused with the scarlet hermits. the mex. red legs will eat this stuff up. _________ 29 g biocube First tank ever 
25 lbs LR
20 lbs LS
1 oceanic protein skimmer
Filter In Middle Chamber: sponge+bioballs+Seachem biofiltration media+2 bags of activated carbon all under a drip tray.
10,000k power compact
actinic pc
3 moonlight LED
1 domino damsel
1 peppermint shrimp
2 scarlet hermits
3 hermits
3 spiny astria snails
2 turbo snails
2 fighting conch ( aquacultured) |