alright! so i have decided to get, instead of gravel, sand substrate for my 75 gal, but my only question is that won't it get sucked up by the filter? and when i clean it with one of those suction pump-things, won't it all get sucked out?
I use pool filter sand in mine, big enough to not get sucked up and small enough to look like sand*, and it is wayyy cleaner than play sand IMO. 50pound bag for 9.99 at leslie's pool supply.