This is a watergarden and goldfish pond. No koi.
I know, I know, i'm tryng to combine two distinct styles of ponding into 1. I've been studying this for 4 yrs and have finally come up with my plan. It's not ideal, but hopefully I've incorporated enough flexibility to be able to change things as needed.
-UV will be t'd off of the pipe after the bio filter, before the pump
-I have a diffuser on the BD, it will be plummed for air but I won't use it initially. Lilies wont' like it.
-filters have drains. DH wants to use a pond vac to clean them out anyway so I can water the garden.
-K1, bioflow etc is very expensive. I need 4-6 cubic feet. Way too much $$$. I'm going to use plastic bottle caps for now. I may supliment with B9 down the road.
I am plumbing skimmer into the SC chamber, it is a direct flow. there will be no basket in the skimmer. That is why I have a prefilter in the SC to catch the floaties.