SO, I followed a guys how to videos on YouTube for the longest time. He did a 4 in. sugar fine (smallest grain size of Nature's Ocean) DSB on a 90g with two MP40's. His sand doesn't blow around the tank. I followed this and made a 4 in. sandbed with the same in my 165g. All I have right now in the tank, as far as powerheads, are two Koralia EVO 1400's. They have blown the sand into suspension and it's just a huge cloud where I can't even see the rocks. I plan on getting two MP40's in the future. How can I stop this? Should I just do a layer of heavier sand on top?
