I would get chaeto, or an algae turf scrubber. Far easier and will not over strip your water of nutrients. Also I might recommend my Cliffs Acro as a great hardy branching acro. It’s nearly bullet proof. Just ask
@pdiehm
So, yeah...the cliff's acro. there is a common misconception, and it may be very well placed with certain corals, that Acropora aren't veyr hardy or tolerable.
I can say without a doubt, the cliff's is hardy and durable. Let me tell you my story.
I got a package of corals from boom, great corals by the way...all the corals were doing well, except for the green slimer. For some reason the green slimer is a coral that everyone says...easiest sps ever. Not for me.
So everything was doing great, growing, but I had this nuisance brown slimy algae on my rocks. My test parameters were pretty solid and stable. 4ppm NO3, 0.01-0.03 PO4. But this algae continued to just keep growing. I tried NoPox...no help. I tried, Bacter-M. No help. I called Bulk Reef Supply, and they recommended Dr. Tim's Waste Away. Reading up on it, I'm like, ok, seems like it will help, can't hurt right?
First dose was 2ml, half a dose. No real harm. 2 weeks passed by, and I did a water change, and added a full dose per BRS instructions (4ml). The next morning, my encrusting Nauti was showing white spots, and I saw my sunset Montipora flaking skin, and my Stylophora was showing signs of tissue loss. I immediately did a 60g change. Didn't help and all those corals died.
The lone survivor was the Cliff's acro. I had it on the frag plug from Boom, and during cleaning broke it off. Thinking, what the heck, I'll leave the plug in the tank. Within a week, the coral had grown over the broken off part, and has a very bright green skin. This was....March or so. Since then, I've added an algae scrubber, and taken my GFO/Carbon off line. I changed my lights from a Reefbreeder 48 to an ATI T5..the other day, I noticed 5 vertical buds about 1/8" to 1/4" bursting from the middle of the plug, with polyps out (actually the polyps are out on both the plug and the coral frag attached to a rock almost 24/7).
Long story short, I nuked my tank, and basically the only thing that survived was the Cliffs Acro. Hardy isn't the word, that coral, within reason may be indestructible.