I did this before. here is what I did: I used the piece of 3/16" tubing about 30" long. connected one side of the tubing with the inlet of the drip chamber. put a roller clamp on this 30" piece tube- this clamp helps controlling your flow rate- . Used other piece of tubing 40" long connected with the outlet of the drip chamber. used a spike at the end of the line- this spike helps easy to poke the line to fish bag. the inlet side of the line pulled out water from my tank to the bag- the outlet side of the line inserted into my fish bag directly. I use this line for acclimating and dosing