I have a lot of fish, most are under 8". I feed heavily and I'm assuming they produce a lot of waste since they are all thick and wide.
25-30 goldfish mostly 6-8", a few fry.
1 albino Channel Cat 13" last fall.
Will probably get a few Koi in a couple of years to grow out when I know the housing market is on the move. Don't have Koi now because I think my pond is a little small, but when we move, I plan on having a big enough pond to house some hogs.
Plants (20+ varieties) are mostly marginal, native, and grow like weeds in the summer months. I do more thinning and trimming of plants as my maintenace then anything else. Filtration consists of a 4k gph pump in my skimmer with a Standard Aquascape Bio-Falls filled with Hyacinth in summer. A couple of Blue Matala mats that are rinsed off bi-weekly. Other than that, the plants, rocks and gravel are my main filtration.