Quote Originally Posted by BigDave View Post
I understand that IG pumps can self-prime and are made to pull water up from below; AG pumps are often designed to be flooded by the water above them. Also there is alot more shenanigans in the HP ratings of AG pumps.
Exactly although technically water can only be pushed and not pulled but that is a minor point.

But AG pumps are generally much smaller than similarly labeled IG pumps so for most situations I would not recommend an IG pump for an AG pool unless it is the smallest in the production line like the 1/2 HP Superpump or the 3/4 HP Superflo or the AG pool is very large. Otherwise, the pump is likely to be over-sized for the filter and pool. Plus you can get a much better deal on an AG combo setup than you would with IG components.