According to the fact, that our tanks are a lot of different to a natural slow floating river, I decided again to give the tanks some air, ether by little bubble stones or by oxidants.
As well I experiment with shrimps in my group tanks (not in the breeding tanks) to keep the tank more clean. At the moment I have two tanks with caridina parvidentata and in my tank with Sphaerichtys selatanensis I have a group of very resistant Red Fire.
I make 50% water change once a week.