Pump size for 20,000 gal pond- water turning brown

I have a 20,000 gal. ponf with Koi and Aquatic plants,what do you surgest for a pump size and how do i keep the pond from turning brown in color?

This entry was posted on Thursday, March 27th, 2008 at 6:39 am and is filed under Water Quality. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.