Several updates since writing the post:

  1. I have gone back to air cooling — I suspect I wasn’t getting enough water flow velocity through the system as I had too many junctions and loops — the system reached 80 degrees C one night and next morning all the colour dropped out of solution and a (moderately) high pressure gas had formed in the loop — this lead to some leakage at serveral fitting connections. Fortunately only a bit of water leaked onto a HDD all was OK. However the chemicals in the pre-mix solution smelled really nasty.

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Geophysicist and Deep Learning Practitioner

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Adrian G

Adrian G

Geophysicist and Deep Learning Practitioner