E ethany LifeTime Supporter May 23, 2009 527 Trenton NJ May 30, 2016 #1 Do they work on sand filters or waste of money?
cowboycasey Gold Supporter LifeTime Supporter TFP Guide Jul 3, 2013 4,781 Fletcher, OK May 30, 2016 #2 Waste they can help on a cartridge filter sometimes Do a deep clean Deep Cleaning a Sand Filter
they can help on a cartridge filter sometimes