Thank you all. Gave me some things to think about.
I got it just to play with, though I do like how it raises my "bed" up higher as if I had a thicker layer of substrate. I use pool filter sand btw. Just for aesthetics on my part. Love the bubble show. I have never seen how a UGF
could be really "useful" as a filter system as the whole concept was wonky. Someone else pointed that out in previous post(s).
I haven't been able to dig up much on them so was wanting to know what the "experts" really thought of it.
Though if my plants send their roots down into it...... Then I can quit having to rebury them. And might be something to see with my brackish plants as I can't keep a single one planted because a certain VGD keeps everything stirred up. I hadn't thought about the plants using it to root! Wonder if I could put a light layer of good plant substrate down, then the UGF
, and then some sand..... Yes I would have get into the gravel underneath at least once a yr for a good vacuuming...more like twice a yr... Hmm. Stuff to ponder.