Magnum 350

[mint ranch]

I have a slightly used magnum 350 canister filter (given to me).

I ordered a new top & o ring, & seal kit ( 3 gaskets) , I still get a head of air in the top of the filter within 2-3 hours. I have bled the air out several times & still keeps happening ? I replaced the tubing as well & using hose clamps on the fittings.

I'm using it as a carbon / sediment filter in conjunction with a UGF on a 125 gallon tank.

Thanks

[jsoong]

Try greasing the top o-ring with Vaseline for better seal.

Also, make sure all intake joints are tight - esp. the connection between the hose & the lid (which I found to be easily loosened), and that the intake is not sucking in air somewhere (bubble wand, etc.)

[neilanh]

A little air in there isn't going to hurt anything, as long as it's working and not grinding up the air it'll be fine.

[mint ranch]

Thank you for the 2 responses.

I'll keep checking & bleeding out the air, I have used a silicone especially for o Rings.