John Sheaffer
Reefing newb
I have only had my 55 gal. reef tank set up for about 5 months. Have had some good surprises, found a hermit crab and a star fish in the live rock we bought and, are doing well for a new tank. Have had our problem with ick lost three fish but, have overcome that. My question is that we have a yellow spongey growth in some spots on our live rock not sure if they are good or bad for the aquarium. Would appreciate some input.