by malakye » Mon Jan 30, 2017 2:35 am
Sand doesn't irritate the fish gills, i have used sand in my tanks for years now, fish like corydoras love routeing around in it.
So long as the sand has settled it doesnt cause any issue with the filtr either. I think sticking sand with silicone would be a lot of messing about but i will be interested to know how it works out for you