I am having a problem with hairline algae on my candy cane coral. i cleared up the problem with hairline algae in my tank other than the stuff on the candy cane. i have a rainfordi goby and lots of crabs and snails but it seems as if it wont go away. part of the coral is bleached and some is still green. i want to save it but not sure the best method. also its in a 29g biocube.