So let me get this straight. Normal filtration only converts nitrites into nitrates and does nothing about the nitrates(am i correct) and in order to remove the nitates, water changes have to be done or plants should be planted (like in your setup) to take the nitrates.
So your telling me that jungle of yours only makes a dent in your setup? Because then i must plant an entire amazon rainforest to filter my 500 gallon predator pond
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Yes
biofiltration only converts toxic ammonia, and toxic nitrite, to less toxic nitrate.
There are basically only 2 ways to eliminate nitrate
Thru water changes, and plant filtration.
My jungle does more than a dent, but I still do regular large water changes.
Below is an average result of my tank water testing.
But my plant weight ratio, to fish weight ratio, is about 10 to 1, 10 xs heavier on the plant sideheavier on the plan side.