Is stabilizer necessary?

[waterbear]

Thanks for the tips.

Brush more? ugh! I'd rather pay for the electricity to run the cleaner more often. Can you tell I just "love" brushing (LOL)?

Pools are like teeth. If you don't brush them enough they can get yucky.
In both cases brushing helps break up biofilms! In your mouth it's called plaque. On your liner it's what makes it feel 'slimy'. The chlorine in your pool is like an antiseptic mouthwash. It kills germs (algae) but doesn't do much against plaque (biofilm) without brushing and flossing.