NE4509 Cotton Tails Pool Filter Replacement for A/C Paper Cartridge,White

These work way more effectively than the standard paper cartridges; however, I will note, you may have to order more than one package to fill up your pump if it is a taller one. I plan on getting 3 or 4 more sets of them so I can swap them out more often and actually wash them each time instead of just back-washing them.One tidbit to make them even more effective, is to get yourself a small section of 1" or 1-1/2" PVC that will just fit in the pump when you put the lid back on, drill some holes all around the top of it, slip it down into the "mouth" of the pump, and fill these balls in around the PVC. Alternatively, you can do like I do and find a fairly tall plastic lid from a Kool-Aid container, drill it full of holes, and put it over a shorter length of PVC to keep the balls from getting sucked into the PVC pipe section. This will improve the surface area for filtering, and greatly increases the time between cleaning these. It also prevents the situation where more powerful pumps suck the mesh filter and part of a ball into the mouth of the pump and lower your flow rate considerably.I almost wish they sold a cartridge made out of these instead of the pleated paper.

Purchased to additional filtering capability for my intex filtration system for my cold plunges - makes a difference in the water. So much so that I bought extra and gave it to my son for his plunge. Inexpensive, reusable, and well made - It significantly improves the filtration system.

These worked great and they were very easy to clean. I recommend

The black disc is why I bought this. I had already bought filter balls but they were getting stuck. That black mesh piece is the trick. I used this for well over a month and it worked perfectly. I highly recommend, you will save so much money.

I was tired of plugged paper filters every week. I ordered 2 of these so I could wash one and have the other in the pump. Took the dirty media out of the pump, toss them in the wash and they are ready to go again.

These work pretty well with our pool filter. We wash them once a week and they keep our pool in great shape. Since we use 7-8 months out of the year, worth it!

The black foam piece pulls into the pump- it tore apart. I gave it a month and a half but went back to a regular filter. This was a complete waste of money as it doesn't even keep the pool any cleaner.

I was skeptical of this product but it turns out to be good.I have no problems with cleaning.Them out and the pool stays very clean.