Diy rock-what cement?

[Dez]

You don't have to get the white Portland Cement. Go to Home Depot or Rona and buy a bag of general purpose portland 10 cement. It's about $11 - 12/bag. It's really heavy. The only difference is that it's grey instead of white. I made some and have it in my tank and most people can't tell the difference. My coraline algae hasn't even really kicked in yet either. Hope this helps.