Suggestions for bettering my filtration without a ground up rebuild
I have 2 DIY ponds, one of which has problems and the other does not. I am pretty sure I know why, but I am unsure of which I want to do to remediate.
So the pond I am having problems with is my bigger one that is dedicated to Koi. I "thought" I was doing it right by making an aquascape style pond with a skimmer, biofalls and fully rocked out inside. I am now finding this was probably not my best choice as my pretty bare liner smaller pond with a submerged pump and pressure filter is absolute ZERO maintenance and thriving, whereas my koi pond constantly requires effort. (Granted the fish are MUCH bigger, but the load is probably equally as large by size between them)
The bigger pond has its days where its pretty nice and clear, but most of the time I only get 1-2ft of visibility. Its just dark and alway seems to have floating particles.
I throw a DIY fines setup in the pond for a couple days and clear it up a bit, and I will vac it and its nice for a bit and goes back eventually. I recently switched to Matala filters in the biofalls and little to no changes other than easier cleanout.
Here are the specs to the best of my memory:
Approx 2500-3000 gallons with the rock and shelves taking up space.
4300 or so gph submersible pump inside my skimmer
Savio Compact skimmer with the 8" weir installed and 25w UV installed in it
Atlantic BF2600 biofalls with Matala mats and bioballs
Other than removing my rock or a complete ground up redesign, what are some budget/landscape friendly things I can do to help my situation out? I do not have a pump house and this is all open landscaping that whatever added I would want to hide in some way shape or form.