Air Lock

[RoscoMcFish]

Never had to deal with this before so i suppose im a bit of newb when it comes to filters. Posted it in the DIY section, suppose that made sense, but i was hopin for a fast response, a have a fairly large tank and keeping it unfiltered makes me slightly paranoid.

http/www.fishforums.net/Air-Lock-On-Filter-t201952.html

Any input would be great cheers.