4003DC-02 Cellulose Filter Media D.E. Alternative for Swimming Pools, 3-Pounds, 2-Pack

Throw a handful in your skimmer and it truly makes your pool crystal clear. have to replace every time you backwash.

Works well filtering "small particles" from pool!!

I've been using this for several years now, first as an additive for a cartridge filter, and for the last three years as a full replacement for DE in a DE filter. A cup in the cartridge filter improved the effectiveness of the filter. I no longer needed to use clarifier or metal remover to get the water really clear, and needed to run the filter much less. In the DE filter, it leaves the water crystal clear, and I can run the filter only a few hours a day.The only downsides are that in a cartridge filter, you need to clean the cartridge more often, and in the DE filter, some of the media will blow through the filter and back into the pool in the first few hours after backwashing/recharging. If you have a really powerful filter pump, this could be a problem. But it's worth the extra vacuuming the day after recharging, as the pool is much cleaner.I've also found that I use a whole lot less chemicals since switching to Fiber Clear. I no longer need clarifier, metal remover, or algaecide, and the pool requires about half the chlorine in a season.Do not mix DE and Fiber Clear, and clean the filter thoroughly before switching to it, as the mixture will clog the filter almost immediately.UPDATE: My original review is now 6 years old and I still use this stuff exclusively. I found that by using an extra cup or 2 with each charge, it’s less likely to blow through. I also tried another similar brand once when this was unavailable, and had a big problem with it blowing through. I won’t do that again. Still a big fan.

value for money, Great product

I made the switch from DE to Cellulose Fiber last year. It really makes a difference and the prices have come down enough so that there's not much difference using one or the other.The only issue is that after backwashing, I have no way of knowing how much to add unless I'm taking the filter apart completely. This year, after opening, I did about 3 backwashes and there was a significant amount of material remaining on the grids. So, I usually try to just judge by the pressure. Instead of 15 cups, I'll try 11 or 12, then check the pressure and add more until it gets to the starting pressure of freshly cleaned grids.So far, the claim that it requires fewer backwashes has been true in my experience. And the water seems to clear more quickly than with DE.

Time will tell, but so far, much easier to use in my Quad 60 filter, and pool water looks crystal clear.

A great alternative to DE! Much lighter, easy to use, and less of a waste problem. And filters just as well.

Let me start by saying I've maintained my pool since we installed it 18 years ago and it's always been crystal clear. I gave this product a try since it supposedly "more environmentaly friendly". Followed the instructions and suggestions based on the reviews. Within a few days my pool was an absolute mess. No my grid's weren't old recently replaced but this crap ran the pressure so high it literally crushed several. And yes I pulled, inspected and cleaned them prior to using this product. Threw a bag and 1/2 of this in the trash. Replaced the grids and added DE the pool was beautiful the next day. Expensive lesson.