Have been using the Lifegard fluidized filter with purigen for a week now as per the Youtube video. Hung it on the frag tank. First, it doesn't tumble like it does in the video. After considerable fiddling, I can get it to work okay, but all the lighter purigen particles are now in the frag tank. I even made a floss post filter to try and catch them but they are elusive. Will siphon them out but don't think they are causing any damage. I had the same problem with the BSR dual reactor, the finer purigen particles would clog the foam pads within hours. While I like regenerating purigen and it does lower organic levels, I am pretty fed up with it.
Even with the big skimmer and turf scrubber, I have so much bio load I cannot get phosphates below .2 but using GFO
for phosphates and purigen for everything else, I get the levels down to .02 where SPS
corals like it. Kind of a belt and suspenders approach. Natural methods first with chemical filtration catching what's left.