Originally Posted by BarraCuda™

I'm also aware of this low flow guideline, however I never managed to find out why the chiller need low flow. If the expert can explain the thermodynamics why having a low flow is better, maybe I can understand better.

All these are not theory only, I personally changed the hose size from 1/2" to 1" and I have seen the difference in reduction of chilling time. I would still say, dont take my words for it, go and try out!