If you rinse quite well you shouldn't have a problem with it in filters. Also get Malaysian trumpet snails, they are a must have for any tank with a sand substrate. They burrow thru the sand in search of food, releasing the pockets of anaerobic gas at a safe level and evenly. I have a power head causing a light current across the sand and in turn letting the detritus get sucked up into my filters. Just an idea for you.
