I'm starting a DSB. I use playsand that I washed and washed and washed. Get the point, they were really dirty. Anyway it is in another 60L small tank at the moment, with powerhead and some old liverock from my tank and sump. Plenty of Bristle worms and some Copepods. Is there anybody In Centurion or Pretoria that can help me out with some sand that got other nice stuff it it. Especially the stuff that make a DSB works. I will replace the sand you take out. I will move the sand from the small tank to the sump DSB on Saturday.