Review on Sun JUP-01 U-V Filter for Aquarium Tank, Internal Green Water Killer, 4-in-1 Submersible Machine Filter Pump Fit 40-80 Gallon Fish Tank, Submersible Aquarium Pump 9W 211GPH, 2X Replaceable Filter Sponge by Margarita Conde

I received the filter early and it was in perfect condition. Instructions were easy to follow in some broken English but still basic and within 20 minutes of opening the box it was working in our tank. The instructions advise you to check the light bulb. 6 hours later, when my wife got home from work, she noticed a noticeable difference in the amount of green water. 24 hours total run time, it seems to do everything advertised. I am very happy with my purchase. The fact that the seller contacted me amazes me. I have never seen a Revain seller do this before. I still can't say enough good things about my experience. The photos show a five day schedule and believe me everything is going according to plan. I didn't have a photo before but it was thick green, the photo I added is 24 hours work. Very satisfied.