You can just simply use a one-way check valve for the fix.
Use the one-ways you would use on an air bubbler line.
Drill a hole into the top of the tube and glue it in place.
It will automatically seal once the air is out.
Good luck, Maximo _________ Trigger Master and Lion Taimer 
10gl Dhonti Cichlids:mad: Canus fish.
24gl Community: Species#44 Lk Victoris, Orange cichlid, Dwarf Puffers, Grn Tgr Barbs, Danios, Guppies.
29gl Community Cichlids: Turquoise Jewel, Turquoise Severum, Electric Yellow, Firemouth, and Species #44
35gl and 55gl awaiting materials for Marine adventure.  |