While my pump is on and I'm looking at the pump basket, should it almost look empty / like there's no water because it's circulating water without any air? I recently had the pool running below the skimmer line, but I've since filled my pool and have had the pump on, but just wanted to make sure it's actually circulating water. Right now, it looks like it's "empty"
Also, I've searched online that you need to close main and skimmer drain valve before cleaning out the pump basket? I was wondering what is the reason for this and if it is necessary to? And how can I find these valves?