Thanks guys
I had thought .6 was pretty low for amonia. Cant Tilapia survive in levals as high as 5? There is a guy here who is trying to put up an aquapinics set up but he doesnt have his biofilter in place yet. He changes out the water but i did a few water tests for him the other day and his amonia levals were about 6.2 granted he was just about to do a water change but still it was really high, his water was dark and it smelled really bad.

how high should NO3 levals be to promote healthy plant growth? I placed some water haytchin in the ponds to lower the amonia but all my levals droped so I was wondering what i should be shooting for in terms of Nitrate.

I will put up some pictures of the system if anyone wants to see it.