Sand for a DSB

[Aquattro]

Gord, it's exactly the same stuff and it costs about $3.00 per 50 pound bag...... IF you live on the east coast of the US. Unfortunately t isn't available here.
There are some less expensive alternatives, about $25 per bag. Seacare.org carries the sand that saltwaterconnection.com sells. Same as the caribsea, just a bit cheaper.