Express Water – 3 Year Reverse Osmosis System Replacement Filter Set – 21 Filters, Carbon GAC, ACB, PAC Filters, Sediment SED Filters – 10 inch Size Water Filters

The middle filter does not work in my standard housing. It lets littlw to no water get by and had me chasing my tail trying to figure out why I would loose all pressure. Will never buy this set again

Great value purchase. Great packaging and quick shipping.

Cost and connection ease

Good quality filters! The money that you saved on this set I purchased couldnt be more happy. They are easy to install.

Got our tds back down to 0 on our ro/di unit for our reef tank ( along with resin refill) great value!

Good bargain for replacements

Great product

Great price. The blue top carbon filter (2nd stage) top hole was too small for my system though. I have a standard 5 stage i-spring system, and the standard housing bits seem to take a ~1 1/16 filter hole. The hole in the blue housing was only abut 15/16. I had to drill it out with a forstener bit, and then it fit fine.

Fantastic! Ppm 13 yay

Great!