I would like to exchange the sand in my 5 foot tank for a different type. Is that possible and how would it be done on an established tank? I want to keep my inverts, fish and rock work but replace the sand. I originally had CaribSea Special Sand (0.5mm - 6.5mm) but over 18 months it isn’t a look I want. Would prefer a switch to CaribSea Seaflor Special Grade sand (1mm - 2mm).