MarcoPereira said:Thanks Byron. One question though...would not adding a group of 5 or 6 of whatever overwhelm the system? I mean, would the ammonia not get crazy high all of a sudden? and if so, what would one do to bring it down? I am sure a large WC would do it but at the risk of sounding lazy, I would hate to have to do water changes everyday....
Will look into the pennywort....sounds lovely.
No, we are talking small fish with plants in the tank. And you are still forgetting about ammonia in acidic water being ammonium which is harmless to fish.
Remember that the aquarium ammonia test kits read both ammonia and ammonium as "ammonia," unless they are very high tech and will distinguish between the two ions. The API test does not, it reads both as ammonia. But so long as the pH remains below 7 as you've said it is, there is no danger.