literally all I did was put in my half gal a day in bleach and add MA as needed for PH and empty the baskets every few days. My Pool was super low maintenance this summer. this creates a really nasty layering of much and de that is hard to wash off and is frankly disgusting. Then the bit of DE you put back in end up unevenly distributed and also layers on top of the crud that didnt fall. The buildup goes to the bottom of the filter housing and sits there. I think that when you backwash, you knock off the DE layer from the filter mesh. 1 hr of my time, 12 bucks of DE and I am good to go for 4-5 more months (barring heavy rains). From now on, when the pressure hits the limit, its a full clean. So, I am done with the backwash/recharge. The last thing I noticed is that there was not nearly as much gunk in the bottom of the empty filter housing as there was the last time. The Next thing I noticed is that it was WAY easier to hose off this time around. The first thing I noticed is that it came out much cleaner than when I pulled it after 3 or so backwash/recharges. I Did backwash but then immediately removed the filter and hosed it off. Now, this is normally when I would backwash, then put in more DE. I watched the pressure gauge and to my amazement I made it about 4-5 months before the pressure got up to the point where something had to be done. Now, we didn't have much rain here in DFW but I get a lot of wind and dust at my place. A few months before the summer I THOROUGHLY cleaned my filter and meticulously added the proper amount (ok maybe a little more than suggested) of DE to the filter. After some thinking on the matter I decided to try an experiment. It is a good sign that your filter is dirty and needs to be cleaned.For several reasons I had come to believe that back-washing then recharging my DE filter was a bad idea. When your pool appears to be dustier than normal and unable maintain a clean pool surface. Another good sign to look out for is when your pool is no longer able to keep up with the debris entering your pool. If you are backwashing on a regular basis, and the pressure gauge continues to read 4 to 5 psi higher than the original starting pressure, this is a good sign that your grids needs to be cleaned. When the pressure on your gauge reads 8 to 10 psi higher than the original starting pressure, manufacturers suggest that DE filters (DE grids) should be cleaned. The pressure on the DE filter will increase as dirt and debris are removed from your pool. Some telltale signs that your filter may need more frequent cleaning can come from checking the pressure gauge, located on top of your filter. Staying consistent with both of these practices (backwashing and grid cleaning) will help you maintain a healthy and sanitary DE filter, so you can enjoy your swimming pool. Disassembling and cleaning your grids, by hand, (every 3-6 months) is the best way to ensure all the bacteria, dirt and debris are removed from your DE filter. Backwashing does help remove dirt and debris from your DE grids, but it is not the best solution, as it does not remove all materials. Backwashing your DE filter is a good way to keep the DE filter clean in between removal and cleaning of the grids. Backwashing is the process of reversing the flow of water in your DE filter, and flushing the contaminated water out the waste line.
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