pipermurphy
Aquarium Advice Freak
I know that many people don't appreciate the Berlin Red sea skimmers, but I had no choice on this one due to the compartment configuration it is the only one that would fit. It has been up and running and skimming a lot of gunk for 3 months with no problems but now it doesn't seem to be skimming DOC matter. It still is creating the many micro bubbles up the shaft tube, but the water that winds up in the collection cup is as clear as the tanks water. What should I do?