just put up new pool

[Bosch232]

I did, would like to know how long should I aerat for, do I let it go all night?

I have an 11k gallon pool, more than your 7k. I put a pvc pipe w/a 45 deg elbow in the filter discharge back into the pool so it would shoot an arc of water back into the pool. If I ran it all night (2 hp pump) my pH would go from 7.2 to 7.8 overnight. Just fyi to help you along. I checked it every morning and evening for 8 days. See this thread: http://www.poolforum.com/pf2/showthr...-do&highlight=

Charting the progress REALLY helped me see what I was doing.