User blog comment:Water Fish 88/Feature idea./@comment-27532250-20160303162214

so, something like the air bladder but in reverse? ie; you 'use' it and it refills your tank/s by a small amount? (in theory for realism, it would be something like a miniature cannister of air you could connect to your own tanks to refill them at will, instead of having a static supply) Would the idea be to make several and leave them in a storage box in a convenient location?