I have/had this CNZ all in one pond filter system in a heated (1500 watt pond heater), covered (with poly-carbonate roof panel in clear) for my Ohio 1100 gallon pond. Pond temp was 58/60 degrees, outside temp reached 4 degrees. The UV light stopped working after 3 days of use. The bulb was blown, covered with white stuff (??) And the housing for the UV light was filled with water. Now it's unusable.

What a wonderful pump! I have a small wine barrel pond on my patio that this pump sits in the bottom of. At first I was very scared because I thought it was too big, in fact it takes up all of the bottom, but believe me it's worth it. I just piled bricks on the sides to put my plants on. Before I bought this pump I could not get my water clear and it would always smell. After I bough this pump the water is always clear and I can see my fish swimming around anytime I want. It's also very easy to clean! I now have it hooked up to a timer on the wall so I don't have to run it all the time, only during certain times of the day. One of the best features about this pump is I can control the water flow by the fountain function. It's great for a small pond like mine. Also the UV light is wonderful as it gets ride of all the bad algae you don't want!!! Wonderful, wonderful, product! A+!!! I would recommend this to anyone who has a small pond like mine or larger. I would definitely buy this again!!! Thank you!!!

Would never purchase this product again. The instructions are vague to say the least, the only help you get is the picture on the front of the box. The instructions say that the bulb is 13 Watts, although when looking up the company it tells you that it takes an 11 Watt bulb. There are no replacement part numbers at all in the manual. It looks as if it is a product that is going to have to be considered disposable, I certainly hope this pond filter lasts a while so I can at least think I got something for my money.

This pond filter is a workhorse. The UV light scrubbed all the algae water crystal clean literally overnight. Before the UV light was working I was having to drain over 50% of the water daily due to dark green algae. I am not exaggerating when I say that now I dont have to do water changes but once every two weeks. This filter works like a dream. Great product

Product works great in my 60 gal. goldfish pond. I had such a bad green algae boom that water changes and chemicals would not clear it . I did a 90% water change then put the filter in. The next day my pond was crystal clear right to the bottom and it's been this way since !