At least you won't be looking at dead chaeto. Now remember, chaeto isn't a cure all but I like the natural approach it provides. I would also get some cheato grow and add small amount once or twice a week to the tank. I hand roll my clump every 4 or 5 days because it's to big to tumble. The light has a great mount and what is particularly nice is you can adjust it so you have no bleed over into other sump sections so no nuisance algae there. Just remember not to dose stuff that kills algae or you will kill chaeto also. I am on my first clump from 8 months ago. I've never lost the original batch.