If that's the case, I have an answer for everything... blah blah blah... just Google it. You're welcome! Haha.
Btw, I've found that a 1:3 ratio of peroxide to tank water for about 5-7 minutes was less harsh and was effective for killing algae off zoa plugs and rocks. Good thing peroxide is cheap too! You can also just use a pipette or a plastic syringe to squirt pure peroxide (meaning 3%, undiluted) on the rocks while they are out of the water and trying to avoid the zoas. That works as well. Depends on your level of infestation.
But if it's just zoas, live rock, and algae, I'd dunk that whole rock in the 1:3 diluted peroxide and call it a day. Observe it and if you see some growth coming back in a week or so, do it one more time and you should be solid.
SPS, just snap at the base and leave the encrusted part and reglue somewhere else.
For aiptasia, personally I've had no luck with any of the aiptasia chemicals as I feel like they kill the main polyp but cause it to release spores or gametes. Almost better to leave the one alone instead of injuring it and causing it to split multiple times.
Only luck I had was physical removal (cutting piece of rock off or chipping) and luckily for me now, a hungry copperband butterfly fish. I am aiptasia free!