thanks a lot lil-lynx, I wouldn't use manando again, it blows around all over. I did slope the substrate to begin with, but when i place the Riccia in it seemed to level out. Its cloudy is not washed properly. I have a lot of Riccia in there and that doesn't root, so it's hard to judge. There is some HC 'cuba' in the back left and that is a bugger to plant in Monando. It doesn't crumble very easy though.