40 Watt Aqua UV Replacement Lamp for UV Clarifier

Product came in a reasonable time. We’ll see how long it lasts!!!

It is an exact replacement for what was in the device originally. The packaging was especially heartwarming. It survived the usual shipping hazards with no damage whatsoever.I recommend reading the instructions for your particular device as to how to change a light tube before attempting it. It is not at all intuitive. It is entirely possible to destroy the quartz tube in the process by simply dropping the light tube into the quartz tube and letting it free fall to punch out the bottom of the tube. At that point you would have to replace the quartz tube, and the light to would probably break in the process as well. Plus, how do you get the shard out? A five minute job has become a two-hour job. You see then, that considerable study and caution is required before you start unscrewing things.From the top of the clear blue crystal cap, one tube does appear to be brighter than the other. I haven't sorted that out. But because my pond became crystal clear after just a few hours of use, I don't care.

I bought a house and on the third summer the lamp needed to be replaced but I was hesitating on doing it due to the cost. The pond water got so murky I could barely see below 1 foot of the water. The three stage filters and Biome balls were clogging every 2 days and no matter what chemicals I tried to used I could not clear the water.After doing some research I found that although the lamp was on it was likely not intense enough to kill the bacteria in the water. No joke at all; 1 week after changing the lamp I was able to see the bottom of the pond about 5 feet down. After the second week the water was crystal clear and has remained that way for 4 months. My filters are cleaned out about once every 2 weeks when using the new lamp in the sterilizer.

works great.

Pond is sparkling now! But the cost is starting to get ridiculous

This light works perfectly for more than a year so far. Saved me a lot of $$ when my contractor told me to order from Amazon.

These bulbs do not last. I ordered a new one - blew out immediately & shipped it back. The second one arrived a week later & it was completely shattered in the tube box it came in. Just a headache to deal with. I switched uv clarifying systems completely just to get away from this one. Plus the bulbs are pricey. Others aren’t.

Have had this filtration system for 12 years. Everything seemed intact when package arrived but it was not marked "glass or fragile" and there is no way to visually tell if part of lamps were broken. we replace these lamps every year and this year the pond water did not clear as expected. I may buy locally next year so it would be easier to return if needed.