Ed Seeley said:You can certainly re-use but I would probably top it off with some new Aqusoil as it will be a bit messy doing it! That aquasoil granules are quite soft and you'll squash some. The Powersand is a bit tougher as it's pumice pieces (with a lot of other things).
Paddy said:I am planning on topping it up with the Ferka Aquabase.