You obviously don't have an aquarium. The biological cycle of the lake with the natural bacteria take care of the fish piss. Simply put..the ammonia in the piss convert to nitrites which convert to nitrates and the nitrates are used by the plant material. The natural bacteria provide the conversion.
Oh...and Lake Cachuma is a beautiful lake for camping and fishing.
You obviously need remedial reading/ comprehension.
UUHHH.. isn't that what I said??? :hammer2: