There's only like 12" between those tanks so for the effort required to move that outlet 6" isn't worth it to me. There's a stud next to it on the left so I would have to pull the wire down to my basement. Then snake it back up cut a new hole and patch the old one. After doing all of that it would only get me 6" over. Doesn't seem worth it to me. Plus I have been running saltwater tanks for like 12 years and never had enough salt creep to effect an outlet under my tank. If I get enough water down that back wall that it shorts my outlet I have bigger problems lol. Just gonna plug a power strip into it anyway.