[EricH]

Originally Posted by Nemisis

Do we have an update on this yet? Did the 2nd update specify how many tanks we can have on board now?

The updates didn't say it quite clearly enough for some folks.

Q&A said, quite clearly, that there is no explicit limit. In other words, as long as all your air tanks fit in the box, meet the cost and weight constraints, and are correctly connected (the ones you aren't using as ballast), you can use as many as you want. Oh, and make sure you satisfy the pressure ratings, too.

http://forums.usfirst.org/showthread.php?t=16408