EWP-3811 High Volume Small DC 12V Brushless Submersible Water/Oil Pump, 7 L/Minutes

This pump, the EWP-3811 - High Volume Small DC 12V Brushless Submersible Water - 7 Ltr. per minute from Lightobject, provides the pressure I need for a aquaponics project. It work well for the growing solution and I use a slip stream and valve back to the storage to adjust for the best spray. I have used many cheap pumps and for some liquid movement they are adequate, but for this application I need a pump like this one, I can count on to provide the volume and pressure I need and also know it will keep on pumping. I do like it.

I purchased this pump for a solar powered aquaponics system (standard IBC setup), and I couldn't be happier with it. It has been running smoothly 24 hours a day, pumping 70-90 gallons per hour of fish water for over a month now without a single problem. It doesn't clog on fish waste, but pumps it right through. It continues to pump even when my supply voltage drops as low as 2.5 volts; it just keeps going (slowly, I'll grant you) lifting water to about 4 feet higher than the tank it's in. I even had a voltage regulator fail and send 20+ volts to this thing; it happily pumped twice as much water as normal for about 6 hours before it was discovered. I replaced the regulator. That 2 minutes while I replaced the regulator is the only down-time this pump has seen since it was installed and it has never complained.For anyone building a small to medium sized aquaponics system or fish tank/pond THIS IS THE PUMP YOU WANT.

This is a strong little pump that I used to build a solar fountain. I am running it of a solar powered 12VDC ATV battery with a manual on/off switch. This pump moved plenty of water to create a nice flow coming out of an antique hand pump which is about 2 feet tall. The output diameter is very small and tends to want to spray the water. To slow down the flow, I added an adapter that changed the diameter to 3/4 inch tubing going up through the pump. With this, it created a nice volume and flow. I would recommend for a similar project.

This little pump packs a surprising amount of power. My only issue is that after being dry for a while, sometime the rotor is in a starting position that doesn't provide enough torque to break through the friction in the bushings. Taking off the filter and poking at the vanes with something long and thin, to rotate them into a better starting position seems to do the trick. And once its run in the water for a while, it doesn't seem to be as much of an issue.

I bought this pump as part of an overall home project to make my home more energy efficient. This pump runs my pond fountain and filter. I use a DROK 5V/12V/24V Adjustable 5-32V to 1-27V DC Volt Converter Regulator to make sure the pump gets enough power to operate but not use too much power at the same time. It gets its power from a 12 volt Thunderbolt solar panel and a Cyber Model 100 Wind Generator Kit. These are all hooked to a small 12 car battery. So far it has operated for several days without home grid power.In my area the solar panel is enough to keep it going without the wind generator.

Hooked a 100 watt solar cell direct to the pump,runs 7-9 hours per dayStopped once cleaned out the strainer and it is back to it!Tough little guy, not even using a battery!

This is a good little pump. However, that was determined after it didn't work at all and had to be taken apart and reassembled correctly. Yes, it was incorrectly assembled from the factory. After that it really moved some water!

I had such high hopes.... It worked fantastically in the goldfish pond as a pump to my aquaponics for almost two weeks. The pump it replaced worked continuously for 2 years - (but of course is no longer sold). When I disassembled the impeller to see if it sucked up anything to make it jam, I discovered that the magnetic impeller had been rubbing on the inside until it wore through and stopped providing an adequate circuit.....