OK most of my tanks are bare bottom.... only because when i started Discus I was told that it was a good way to keep the Nitrates down because gunk gets caught in the gravel. With CA cichlids is this really a big deal??? because I would really like to decorate my Jag tank a bit and would love to see it with some aquascaping. Does havin a thin layer of substrate make any difference what so ever??? like a little gravel vac while water change is not that big of a deal.