Steve, I guees I'm not understanding what your goals are then....a septic tank is in no way related to a fish ecosystem...also, what we do and like can be deadly to the fish...are the tank goals for your benefit or for the benefit of the fish....they seem to be polar opposite.
A prime example of what many people commonly do when it comes to fish is when people that love filtered, soft (filtered reverse osmosis) water think it is great for fish also...for fresh water fish though soft, filtered water it is as bad as it can possibly get for them to live in...
