Your tank is simply having nutrient control issues, water changes and competitors are the way to go IMO, maybe even media filtration.
I dont know everything about chemi clean, but I know its an anti bacterial, and we have a lot of different bacterias in our tanks, it wont kill them all, but its not going to only kill one type.
Flow, new bulbs, bluer temp bulbs, water changes and CUC should all be parts of the over all solution.
If all you do is eliminate one of the consumers you will have excessive nutrient issues, and create an oprotunity for another pest. Hair algae, dinos, aiptasia, dictoya, bryopsis, will all have one lesscompetitor for their food, and can get out of control.