Magic Water Pouch

I would like to see a magic upgrade to the Water Pouch (similar to the upgrade to the chests) which increases capacity from 20 to 200 (since it's literally just water). This would allow a player who uses water consistently to only need one water pouch for any particular outing, as well as making filling the water troughs of your seedbeds much, much easier. The upgrade should require Shroud Spores (the base level ones), but should require 50 of them because of the ×10 capacity boost.