throwingcopper81 said:
The pump seems to be sucking up all little bits of plants, etc that quickly cover the pump. Doesn't this lessen the efficacy of the pump? Make it work harder?
Yes and yes. Can even damage the pump.
What do you mean by "little bits of plants"? Are we talking about algae?
throwingcopper81 said:
Any ideas on how to prevent this?
I keep the pump off the bottom.
And/or I place the pump after the skimmer.
Keeping the pond clean by scooping with a net or vacuuming reduces stuff that will clog.
You can make larger baskets out of wire or plastic mesh. The pump can handle certain size stuff, like 1/4" or whatever the manufacturer says. The trick is to only try and stop larger stuff and let the smaller stuff go thru the pump. Using matting type stuff will stop smaller stuff clogging faster and also algae can grow on it and clog it. So you'd be right back to cleaning.
If this is an algae problem it can overwhelm anything. I once made a pre-filter the size of 30 gal trash can I kid you not. It clogged. Just no way around it, dead algae has to be dealt with another way, direct removal.