MCA,
Thanks for taking time to read my post and provide input
.
MCA: "Depends....will the air domes be own 24/7? If so the floor can be flat. Our pond floor is flat and the currents from the air domes move everything to the drains. IMHO unless you pour marbles into the pond, the slope will simply not make that much difference. To make a huge difference...run those air domes."
I plan on running the air domes 24/7 and only turn it off when vewing my Koi.
Does anyone else have an opinion with having the bottom slope or not?
Thanks,
Vince