Well I never did until today. I've been fighting my caulerpa farm for a year or better now, no way to get it all out and too much for my tangs to handle. Most of my SPS was overgrown and has been removed over he past several months. I've got a nutrient issue somewhere and I was shocked at how much gunk was in my rock, corals, etc... Mind you I have 2 Tunze 6100s, and two 6105s in the tank currently. Well I used one of them today to create a storm, and the tank turned opaque. This is going to be a regular event over the next few days, then at every H2O change. Today I blew it all out and it seems I collected a lot of the detritus in a sock which I switched out as soon as the tank had cleared, and my skimmer cleared a bunch of stuff out as well. I though I had pretty good flow, but found I have lots of areas for detritus to settle that may actually be a big part of my problems. Definitely adding this to my maintenance routine.