My e-goby is pretty thorough in his constant overturn of the stand in my DT, which as a consequence makes it nearly impossible for much detritus to build up in it. I probably have some of the cleanest sand around in my main reef tank, teeming with bacteria and pods but very little "gunk". I think it'll be all right, but I'll definitely monitor parameters in case I need to do a big WC or something. I'm not sure if Amquel is compatible with inverts but I'll read up on that, too, just in case.