Welcome to PBF BP!

Originally Posted By: bigpig
..... feels like this was designed to be a filter system with the right media..


Looks like it to me as well. Maybe one of the guys with aquaculture setups can help you out with suggestions. Have you checked into any of the Koi Pond forums? I suspect your setup is routine for them and they can probably offer good advice as well.

Good Luck,

Bill D.


[Linked Image]
Be Brave Enough to Suck at Something New!