Bag Filter, 155384, BP-420-1 Polypropylene 1 Micron, 4.5" x 20"

I have a 18' Intex swimming pool that had a major attack of algae at the end of last season. I was thinking I was going to have to empty it. I then found these mentioned on a YouTube video, and decided to give it a try. Man, these guys are the real deal. The amount of junk it catches that the filter misses is phenomenal. They can be used by simply throwing them in the wash. I am thinking I will continue to use these throughout this season as it works better than the paper filters, and they are reusable. Inexpensive too. Thank you whoever makes these. If you have a dirty swimming pool, get these.

A minor inconvenience over the past couple decades with sediment and sand plugging up faucet screens and making their presence in the toilet tanks and setting a routine every two or three months of cleaning all the fixtures. With this bag filter setup there is little, if any perceptible pressure or flow loss and no sediment or sand in our water. Our plumber recommended we check it in six months to see how much is collected, and if the pressure gauge on the filter assembly is low, change the filter. The filter change process is very simple and relatively inexpensive compared to the extensive time for plumbing cleanings every couple of months as we did before the filter addition.

I put it on my pool and worked great! Only took about 3 days of stirring/ added chemicals the pool to go from green to clear. After everything cleared up i took it off and let the cartridge filter maintain.

Good solid product

Great buy

Exactly what I expected!

I have a metal frame pool for my kids. I got behind on treatments and the Algae all of a sudden took off and I couldn't keep it under control. I decided to try this experiment. I got a wooden oar and created a whirlpool. It is approx 4500 gallons. I added 4 times the shock they suggest you add every week. I cut the top of the filter off and hose clamped it to my discharge line. I attached it to my pool ladder and covered the pool with the solar cover. I left for 3 days and came back to really clean water. I couldn't believe it. It appears the water level kept going up higher in the bag do to all the filtering. I bought a couple more and plan on using them on the cheap Venturi style pool vacuum I have. 3 days later and we are back in action!

I bought this to capture the return on my pool output hose. Since it was advertised as 1 micron , I figured that it would capture the algae as I vacuumed. I went ahead and made a mounting for the opening with an hose adapter. I turned the pump on to vacuum and watched the algae come right out of the filter material. What a waste of time. This filter will not catch algae. I ended up buying those skimmer basket socks and constantly sweeping the pool while the pump is running to keep the algae in suspension so that the sock can catch the algae instead. That’s what ended up working for me.