I think I am going to stick with the aluminum tape ducting. The rad gets plenty of airflow, even on low, so I am not going to worry about it. The water temp seems very stable, I'd guess it is very near ambient.
I keep hearing this whistling sound, and at first I thought it was a leak, but upon close examination of all connections, there were no drips anywhere. I think it might be my IBM 60 GXP failing... what a surprise

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