As long as you stay under 10 parts per thousand you are fine. 4-6 I think is actually premium for most fresh water fish. Some of the learned biologist folks will be able to give be a better more exact answer. But I do know that a little
Salt doesn’t hurt the fish. Plants might be another story.
You can get salt tolerant plants too though.
Last edited by RER; 04/03/18 08:29 AM.
