I could say the same for the filters I've made. Only difference is the price tag.tcarswell;3085572; said:What can I say I like the filtersI would say they are worth the money in the inexpensive media and high turnover.Sponges that last years not weeks like most HOB cartridges. You easily save the price difference between other filters in cartridges alone. Plus they are rock solid and run for years and years.