I agree with [MENTION=336013]pa1ntbru5h[/MENTION]. Granted both the sea slug and the reef flux are just band aids but the reeflux band aid has neosporin on steroids. Lol. Either way, if it keeps coming back, it's a sign of a bigger issue. Wen i used reef flux to combat bryopsis and gha, i changed out the old filter media on my rodi, shortened my light schedule by 1 hr, cut down on heavy feedings and went back to more frequent water changes. My tank has been nuisance algae free ever since. Good luck with whatever u decide to do.