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

I have mixed feelings about the pump, so pros + cons Pros: - pumps water well - quiet Cons: - there is no mechanism to prevent water flow if the pressure inside is too high is high (i.e. too much water) it will overflow through the outlet - in combination with the previous paragraph I had one end of the outlet in the bottom and if there is a seal with a pipe + bottom water and dirt will recede into the pump I caught it quickly and if you can install it without submerging it in the ground, it flows normally. I need to redesign my distribution to compensate for the lack of a water flow prevention mechanism, but I've attached a video showing it working well. They seem capable and I believe in them, especially since I just cheer them on with a momentary push button switch from time to time. Pumps alone won't help and you need to plan accordingly.