hi everyone, im looking for some advice for back sand for a 72 gallon planet aquarium i just ordered. im planning on it being a african cichlid tank. ive had alot of tanks over the years but always with just gravel, never sand. so back to my question, is there any black sand that is easy to clean with a gravel vac and that does not cloud all up and plug up filters? ive sean a few reviews on YouTube about National geographic sand and people talking about how great it is but i cant seam to find it anyway online, looks to be discontinued. i will be running a fluval c4 and a fluval 406 if that helps. thanks