Aqua-Safe in business any more?

[Aquattro]

Have a look here, pretty decent pricing.

http://www.progressivereef.com/reverse-osmosis.php

[fkshiu]

I believe Bulk Reef Supply also sells RO stuff like membranes.

[dreef]

Yes i just bought,or my buddy did for me,a membrane from bulk reef supply,it was a 75 gpd for 39 american.I buy my cartridges from ChemMaster,you can get those also from BRS,but mise well support a canadian fellow reefer.Everything fits in my aquasafe 5 stage,no problems.