I bought this exact product from Aquatek on eBay. The item is called "PRO CO2
Regulator Solenoid(6 Outlets)+ 6 bubble counter "
eBay Seller: aqua eworld: Pet Supplies, Yard, Garden Outdoor Living items on eBay.com
As far as I know, these multiple-outlet regulator solenoid is the newest and latest introduction from Aquatek. IMO
, this is a very economical way to reduce the set-up cost for additional tanks... since it would cost me $$$$ to buy six single-outlet regulators. (at least $300)
I think they have this item in stock... good luck!!!