[carrie1964]

Quote: Originally Posted by sumthinfishys You did good. Whats the depth? Does it have air drains? One drain or two? Mike C

Hi Mike,
I have two aerated bottom drains. The pond depth is 3 1/2 feet to 5 feet. We would have gone deeper but the labor cost involved to move and install a completely concrete pond was prohibitive. So we have a concrete collar and a block wall one the filter pit side.

Quote: Originally Posted by Birdman Can you explain the filtration please.

Gene Winstead of Koi Village built these for me. Each bottom drain feeds one set of filters and the water is returned via a TPR.I also have a return from the skimmer to the waterfall that has been teed with another midlevel return.
The first filter chamber is a static prefilter.The best thing about that is how well it settles debri.I was amazed this week how much was in the bottom.The second chamber is biological filtration.