I know I'm an outcast on this, but I always just throw wet rock in my tank and cycle it. In my 10 gallon I have a small patch of bubble algae that is being stubborn, but my tuxedo urchin and turbo snail have made light work of the bryopsis and hair algae I had in their as well. Luckily I have never had anything worse than that and it was the first time I've used pukani which I will not use again.