Just used this filter for first time and loved it!! Filters very fast! Used it between two people for 7 days and never gave us trouble. only had to backflush once. Although, I will say that all the water sources were crystal clear, so pretty sure that helped a bunch. Very easy to use and lightweight. You have to be patient when backflushing which is why I only gave it four stars. Takes a few minutes to start to pull water through filter when backflushing, but again, didn't have to do that much. Bottom line great filter and no fuss if your water source is free of debris and sediments.