Planning to dose micro algae and phytoplancton

Would that work as a chiller if you just pumped water through a coil of tubing inside? Sorry to hijack.
 
It will take that 1.5 liter of water down to 44 degrees

I bought a 3 channel dosing pump, I will use one channel for this, the other two for Calc and Alc two part

I figure once a hour I will dose a milliliter or two into Refugium
 
Is there any concern about the feeders dying while in transit through the dosing pump? those peristaltic pumps keep the liquid suspended with in the tube and potentially temperature and O2 supply could be a concern. I guess fresh dead ones in the column is probably better than any sort of prepared food anyway. Just a thought.
 
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