I don't know about the paste but I do use the concentrated liquid and I like it quite well.
Going back to aeration, I had a culture of rotifers living four months. Then the pump started to fail. In the 6 foot tube, it went from a strong boil to a trickle and the culture died. I changed the air line to the other port but in a week the bubbles went back down to a trickle and the culture died again.
As the feeding goes higher, the population goes up and so does the amount of ammonia. With a higher population, there is a much higher need for oxygen. Without it you can get crashes. With more air, you can be less accurate with the feeding.
I think that I'm going to change from a large diaphragm pump to a magnetic piston to consistently pump the the depth of about 5 feet.
|