Do the tanks vary largely in capacity as they are different sizes…what about using two tanks?
The tanks volume is directly proportional to its size. You get roughly twice as many shots using the medium tank as the small one and probably more than twice as many again with the large tank. Using two tanks is also a great option for more flexibility in your design while doubling the capacity. You also don’t have to get two evenly sized tanks, you could use a medium and a small for instance. The standard hose fitting pack has just enough stuff to make a two tank system work, but you may want to order an extra set of “T” fittings so you have a few extra.