COOSPIDER Aquarium Filter JUP-01 For 40-80 Gallon

I had an algae bloom for the first time after owning aquariums for 35 years. The first picture, I was actually taking a picture of my cat Izzy. But you can see how cloudy my 40 gallon tank is. The algae bloom just came out of nowhere, I have a canister filter with New Media in it except for the biological media part. Drained half the water still had cloudiness. Attached the UV sterilizer and this is what my tank look like after 2 days. This is a dynamite product. It even comes with a spare bulb and a spare filter.

I watched this product being used on utube on video. I had algae bloom. I tryed everything. I couldn’t even see my fish. I have glo fish. I hooked this up let it run day and night hood light on for 7 days. Drained 30 gal tank half way down. Filled back up continued with ultra violet light pump. Today is July 4 th 13 days in and woke up to a clear tank this morning. It’s my birthday today. A great birthday present. It is truly amazing. Thank you for a product that finally lives up to its name. Buy this product !!!!!!!!!!!!

Sería bueno que tuviera un apagador por aparte de la lámpara.

Purchase this product for my 55 gallon tank and it works good, my water is clear and clean after 15 days so far.

No se percibe cambio en la coloracion del agua y la cantidad de alga.

I bought a JUB-01 in Jan 2024. Installed it in a 70 gal turtle/fish aquarium on my light timer so it only ran about 10 hours per day. It worked great when it was first installed and cleared up the cloudy water in a couple of days. I recently noticed the water getting cloudy again and saw the light was not blue at the bottom. I pulled the filter and when I opened it up the inner quartz tube around the bulb was totally filled with water. The bulb was corroded and shorted out. I am a Plastics Engineer and started looking at the O ring interface to see if silicone grease or a thicker O ring might help fix the issue. However I noticed that it looks like the factory applied a layer of “glue” inside the molded cylinder where the O ring on the quartz tube is supposed to compress and seal. It might have worked, but was poorly executed. It was not smooth and has ripples in the glue surface so the O ring cannot compress evenly and seal. This was not normal for this type of design and after 20 years of working with Chinese suppliers sourcing plastic parts for major US companies, I am guessing the molding diameter was out of specification. To save a few bucks, rather than scrapping the parts, they tried to rework them using a “glue” wiped inside the plastic cylider to decrease the inner diameter by 0.5mm or so and better compress the O ring. However there are large ripples in the hard glue surface so it is not even and there is no way for it to make a good/even compression of the O ring around the entire circumference. Maybe it was smooth enough to work sometimes, but If you get one of these and see a “glue” build up where the quartz tube/ O ring is supposed to seal I do not recommend using it. Just send it back. Looking at reviews from late 2023 to early 2024 a lot of units reported leaking. I’ll bet they all have this “glue” rework inside of them. They need to fix the molding process or modify the molding tool so it has the correct dimensions for the O ring to seal without adding crap to the inner sealing surface as a band-aid.