...and I abuse my pool filter.
I started this thread here because I know without asking that it belongs here. Instead of following the good advice offered here, I do not maintain my DE filter as prescribed. I am embarking on my own experiment to determine the consequences of my method vs conventional advice.
Do nothing to the filter until it tells me to. In other words, if it ain't broke don't fix it! Until I see some kind of symptom(persistent pressure rise, water clarity/quality issues, etc.) of a problem I will periodically backwash thoroughly and recharge with fresh DE. Then when the grids do fail, I will simply replace them instead of trying to clean them.
According to the pool guy who I talked to before buying my current house/pool, the DE filter was installed new in the summer of 2007. He(pool guy) advised me that I should have him come out and take apart/clean the filter as soon as possible because it hadn't been done since install.
It is now towards the end of swim season 2010, and the only maintenance I have done is to thoroughly backwash it periodically. There has been no "clean filter" pressure rise, and water clarity is still excellent. I really don't believe the clarity could get much better than it is right now. At night, with the light on, almost no particulate is visible in the water. When the water is still, you might think it is empty. All parameters that we test for in the BBB method are at optimal values. Here is a pic I took this morning that shows the water clarity/quality. If the reflection was not obscuring it, you would clearly see the drain in the deep end, and pic was taken from ~30+ feet away.[attachment=0:1k7ku3bi]this morning 7-30-10.jpg[/attachment:1k7ku3bi]
How long can this go on? That is my question as well! When a problem does arise, or if I just get too curious at some point and take apart the filter, I will post pics in this thread whether good or bad. I am not ashamed to show my error publicly if it comes down to it.