Sizing pumps and skimmers

Pond skimmer, wrong size pump?
I had a pond built last month. I fear the pump is too powerful. The size is 6 ft by 9 ft depth from 18 in to 36 in at deepest. The skimmer states for pump up to 1800 gph. The pump installed in the skimmer is 2400 gph. It seem like the skimmer water level is too low and funny, almost whirlpool sounds come from skimmer. Is this due to the pump being too strong. Is it harmful to have too strong of a pump?



Answer:
Your pump is not too big. Your skimmer is too small. You can just put the pump in the pond and direct the water over the waterfall. That will do until or if you wish to replace the skimmer.

Frankly, you probably do not need a skimmer at all. Most people do not unless they are under a tree. The person who installed your pond needs to learn how to install one properly. It is still under warranty, so call him back and insist he do it right.

To find more pond information, go to pondlady.com

Pond Pump Size

Question:

IF I HAVE A 12 X 6 FT POND THAT IS 2 FT DEEP.  WHAT SIZE POND PUMP DO I NEED?
ALSO IF I'M  GOING TO HAVE KOI FISH, FOUNTAIN AND WATERFALL WITH THE 12X6 FT POND WOULD I NEED A PUMP FOR FOUNTAIN AND PUMP FOR POND?

Answer:

I would use at least a 3500 gph pump with a bio filter. I would probably buy a smaller pump for the fountain....maybe 450gph depending on the height of the fountain.
Koi like a deeper pond than 2', so consider that in your digging. You might want to stick with goldfish. Having koi means massive filtration systems and lots of maintenance.