I use a Mr. Clean Magic Eraser on our biofilm on the stairs. Works great and no side effects. I do hold the suction side vacuum close while scrubbing so most will go into the filter and not 'oil slick' in the pool.
Definitely read up on how TFP recommends chemicals in the pool at the pool school Pool School - Pool School
I think the FrogLog is a wonderful thing. You can buy it on Amazon and you definitely need to help these critters!