Trying to find a work around for nether portals not linking like they should because of y level dominance. 

Never build a water off switch for a portal. But figured turning off 1 portal until ready to send villagers back from nether would be great. The dispenser fire water. The water vanishes. But portal stays on. 

Not sure how. But an on off would be a great option. In general. But also as a bug work around. Since ghasts can turn off a portal with fire charge. Maybe having a lighter be able to turn it off and on would be a good fix for water. 

Honestly would like portals to be fixed. But this on off would be a good back up.