Planted Tank Enthusiast
Join Date: Jun 2010
Location: Central Wisconsin
Looking at that, Im willing to bet that your foam job might not be 100% air tight.
I just got those little airline adapters from petco, drilled a hole, superglued them to the cap, and then put my hosing on to that...doesnt flex or move around so it wont fail over time.
Also your secondary container - I have never had good luck with such containers, even when I siliconed the tops on them.
Eheim Pimp #423
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