MichaelsLilGray
Aquarium Advice FINatic
This is my first sump i built.. everything is great on it, except id like to know.. how do you guys get these things calibrated EXACTLY where they need to be? The pump is either pumping to much.. or to little. ive made a few improvements to the line, like making it bring in a little less from the tank, via a nozzle. but i still run the pump dry everynow and again.. allowing bubbles into my tank =(. any suggestions?