Got this together with chiller from a fellow reefer. Just tried it today and realised that my water level in the iOS tank is too Low for the bubbles to rise up. Maybe it will work for you.
According to the original seller this model of bm tends to have bubbles seeping out. Therefore he glued something to the clip. He doesn't recommend it but gave it to me as a bundle for the chiller.
Given the lack of confidence from previous owner, selling for $25 only. Collect at 644656.
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