Review on High Efficiency Mini 12V Submersible Water Pump for Aquariums - Quiet and Powerful, 280L/H, 300cm Lift by Amanda Christensen

I've been using this pump for almost 2 months in a test system due to some negative feedback. The pump is fully submerged in water, bringing the water column to a height of approximately 1' and passing through 2 (3-way) heat exchangers that have approximately the same internal diameter as the pump's inlet/outlet connections. The total length of the pipes used is about 8 feet. I run the pump continuously for 24 hours, then turn the pump on for 1 hour, then turn it off for 1 hour for 24 hours, then repeat. I have 3 days before the test starts = 1 month. So far I haven't noticed any decrease in flux or change in current draw. If all else fails I plan to use it in my one bucket hydroponic water cooling system. (I needed a pump for this project and since they were so cheap I bought a spare just in case.) If anything goes wrong I will update this review.