lyfespan
Well-Known Member
- Joined
- Apr 15, 2014
- Messages
- 1,401
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My box lids are caulked to prevent leaking Lyfespan but the hole I use as an access port is where I would lose air if I was trying to seperate air inside the box and air outside the box !-- I run my pumps cord and bubbler hoses thru one port and still haven't found a good seal but the air I pump into the boxes needs a way to escape!
rubber firewall grommets man come in whatever size you need