For surface algae, nothing beats bristle nosed plecos. For suspened algae tilapia are king. For string algae no one else eats, try scuds.

Forget CAE & SAE's. I've tried them. CAE's are agressive, SAE's grow too fast, then get agressive. Niether compares to juvenile BNP's.

If you want to control algae, control the light.