First time poster here...
I had some problems with my old DE filter, so ended up taking it offline for about 2 weeks. We have a lot of trees near the pool and it didn't take long for algae to start growing. The green picture below is actually a few days before it got really bad. By the time I got the new filter installed, you couldn't even see the first step. I'm about 36 hours in to the SLAM process now and things are going well. I'm guessing another day or 2 until I'm back to clear water.
I know the 100 sq ft quad filter is probably overkill for my pool, but with all the junk that falls in the water (year round) here in Austin, I thought it was worth the added cost. Pressure hasn't gone up much (if any) since I started the process.
Just wanted to say thanks for all the information made available via this site. It has certainly made things easier and saved me a lot of time/money/frustration.