You'd crack the Bulkhead before you crack the glass.
Hand Tighten, then only a little more tightening with the channel lock. If you feel like your over tightening, you are!
I used a see through critter cage to introduce a new fish and allow the aggression to happen with the fish not being able to hurt each other. I use a mag float and a critter cage with a bunch of holes drilled. There's an old thread about it under do it yourself. Worked every time.
Sent from my iPhone using Tapatalk
I run an autofeeder with Thera+ Pellets that runs twice a day. I've been feeding more frozen lately because of my new Anthias' school and some new tangs that may not be eating the pellets yet. My fish are horribly fat.... lol