[jeffkrol]

Bought out by BulkReefSupply.
Posted some lights in the lighting section.
Found this for "equipment"
Aluminum CO2 tanks w/ they say free shipping
5# $51..
10# $80

Search Results Template - Bulk Reef Supply

Co2 found in: Color Changing CO2 Absorbent Media, CO2 Tank - 5 lbs., Universal CO2 Scrubber, CO2 Regulator 7077.3, 2.2lbs Color Changing CO2 Absorbent Media, Medium CO2 Scrubber (2.2lb Capacity), CarbonDoser Electronic CO2..

www.marinedepot.com

No guarantee you can't find cheaper so do your own due diligence.