When keeping fish in un natural glass boxes stress is always prevalent, the biggest job as fk is too keep that down as much as possible, this is achieved thru wc, healthy diet, no aggression, space etc....toxic water just pushes them to far and bad things happen, if you don't understand the importance of water quality I feel bad for ur fish.....lakes and rivers have their own bb, plants, and inhabitants, its an Eco system that relys on surface runoff to replenish evaporation, which, happens extremly fast, picture a million gallon tank with no lid.... Thus rain falls and channels back into rivers..... Makin it rain-->evaporation-->rain/condensation-->runoff, a very important role in this particular Eco system.
you may be confusing your puddle of water for a channel, where natural water and house water drains, thus the prevalence of ammonia. A river and lake by definition is the very opposite, encouraging plant and animal growth, while sustaining them at the same time.
Go S. Vettel #1 rb8
