Aquarium Air-line tubing holder (dosing)
thingiverse
Designed to clip on to any of the 40g or less Aqueon tanks trim, or any tank trim that is 3/4" at the widest part of the trim profile. Two hole design keeps the 1/4" OD air line tubing straight down into the tank or sump. I use these for dosing 2 part in a reef tank, unlike the commercial dosing line holders I can separate my lines by having them individually secured to the tank at separate locations. This should work great for anyone who needs to secure 1/4" tubing, can be used for aquarium air lines, Co2 lines, 2 part, auto top off, etc.
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