310 Aquatics

I have 7 of these and they are great. They do clog. If you have an air compressor, the quick and easy is to use a barbed fitting on your air nozzle, attach a 3 or 4 inch aquarium airline hose between the nozzle and the collar. I use 50-60 psi and it is cleared; flow is back to new. Be sure to pinch the airline at the collar as it will blow off due to the pressure. Happy Fish Keeping, Gary