I see, thanks mate, where abouts do you live, and what's the test date on them like?Buy second hand,make sure you have a nice long test on them 12 or 15 litre 232 or 300 bar are available and you will need a fill rig.
Also somewhere like a dive shop / gun shop to refill.
Ill have some 12 s up for sale soon but postage or collection is a factor.
Right, yep will do, yeah I always fill very slowly when I'm filliong air bottles anywayThere are a few various adapters
https://www.google.co.uk/search?q=scuba tank fill station pics&hl=en&client=firefox-a&hs=OwB&rls=org.mozilla:en-USfficial&tbm=isch&tbo=u&source=univ&sa=X&ei=oUgnUcrQGqmY0QWSo4CIDA&ved=0CDAQsAQ&biw=1920&bih=889#imgrc=1ugdm4kiMitxeM:;KQFy0_NZogsLgM;http%3A%2F%2Fwww.chinagreenhill.com%2Fupload%2Fimages%2FNew%2520Paintball%2520%26%2520Scuba%2520Air%2520Fill%2520Station%2520Adapter3.jpg;http%3A%2F%2Fwww.chinagreenhill.com%2Findex.php%2Fproduct%2FPaintball%2520%26%2520Scuba%2520Air%2520Fill%2520Station%2520Adapter.html;300;300
Give LIPs a call http://www.lips-paintball.com/
They should have some in.
If you do get a dive tank and fill station, i would advise read up the safety first.
Fill very slowly, and make sure the pressure on the scuba tank matches your paintball bottle.