I agree with RossC & greggswimm, I am not a fan of sand
Sand gets in the filter and can jam the impellor.
And also, when you use a magnet to clean algae, you have to be careful that you don't trap any between the magnet and the glass, otherwise you will get fine scratches and will damage the glass.
Sand gets in the filter and can jam the impellor.
And also, when you use a magnet to clean algae, you have to be careful that you don't trap any between the magnet and the glass, otherwise you will get fine scratches and will damage the glass.