I have had 2 Intex pools with the SWG. The SWG unit has not been dependable, Of the 3 SWG units I have had one was replaced in the first year and the replacement lasted less than 6 months. Another problem with the Intex SWG is that it contains a copper block that is used to prevent algae by releasing copper ions. Great theory but in practice the granddaughters had this awful shade of green tinted hair. Both Pools were physically great and I have no complaint about the pool quality just the SWG. BTW both Intex pools were destroyed by falling tree limbs during 2 separate ice storms.