Review on KEDSUM 330GPH Ultra Quiet Submersible Pump With High Lift And Grounded Power Cord - Ideal For Fish Tanks, Ponds, Aquariums, Statuary, Hydroponics - Includes 3 Nozzles And 1500L/H Water Flow by Chris Hanson

Updated: The seller sent me a new pump after my first one did not function properly. I have changed my review from 2 to 5 stars since the seller corrected the problem quickly and without me even asking for a new pump. So, although it may have been frustrating to get a defective pump the first time, I am very happy with this seller's response. The new pump works perfectly!Original The pump volume is good once it starts flowing, but that is the challenge. For some reason, the only way I can get it to start pumping is to pull it out of the water and then put it back in. I have to do it several times before it starts pumping water. If I try to start it submerged, it just vibrates and acts like it can't get primed. I've tried gently tapping on it under water, but that doesn't work. So it won't work for any kind of water feature where I have to leave it submerged. Once running and pumping, it stays on just fine. But it's flowing water the whole time I try to get it back into position under water. Maybe this is just a defect in the one I got.