NSKIRK559;4324272; said:I own 3 of these and cleaning them is easy. I have 2 of them on a 180 gallon very heavy stock tank, I clean mine about 2-4 months and I only use bio-max in all 3 trays and on the bottom I use one blue pad I don't have any problems and I love these pumps. Time frame is about 30min to clean a pump.