I have had Koi ponds for 25 years and have spent MUCH more in the past for equipment that did not work as well as this combination pump. Clear my water beautifully. Be aware there is a small screw holding the top in place that must be removed for cleaning. I struggled with that for longer than I care to admit before figuring it out.

My pond is small but this combo filter clear up the water now we can see the fish and the bottom of the pond. Like the fact it’s a combination of filter and UV.

I have a very small 90 gallon pond that houses several shubunkins and I can't count how many frogs have moved in. I have never filtered this pond so it is usually so green with algae you can only see the fish when they are at the top for feeding. My last pond pump died so I decided to try this filter not expecting anything but water flow. To my absolute delight and surprise, this little filter had my water clear to the bottom within a week. The cons are that you have to get on your hands and knees to pull this thing out if the water and clean the filter pad daily until the water clears. After that it requires weekly cleaning. I recommend not putting this filter on the very bottom. I have mine on a paving stone. One of the pictures I posted is of the fish hanging out at the bottom of a 3 ft section of the pond. I highly recommend this filter for small ponds.

Giving this five stars right now for ease of installment and it also looks handsome in our Koi pond. Don’t know how easy it is to clean yet? Will update this review in a couple weeks after we see if the water clears up…

The pond is inside my home in higher altitude and wanted control of the algae without herbicides!