Originally Posted by manbeast
wasn't a problem at all, it cleared up very quickly and after a day or two I did check the filter and there was barely a trace of sand and on a fluval the impeller is top mounted with the water flow running bottom to top so any sand that might get in just sits at the bottom, easy peasy
As with most canister filters, the impeller is on the return side. It's still possible to damage filters, hob
's WILL be damaged if they are run while a lot of sand is floating.