We have the GM-0.5A standard pump (blue). So far, we have gotten 250+ hours of continuous runtime on the pump. We are actively air cooling it, but that might not be necessary.It’s not super quiet, but it seems very sturdy and well built.Even after a week and a half of continuous use, I haven’t noticed any changes in sound or temperature that would indicate any issues.Seems like a good pump! I’ll keep this updated as we accrue more hours.[Update] we have now been running the pump continuously for four months with no air cooling.
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