Philips 325126 9-watt PL-S TUV Germicidal with 2-Pin Base Light Bulb

It does not seem to control my algae very well despite water changes very 8 days though my fish seem healthy (no diseases) so it may be helping with disease control. Hard to tell

Great

We have a bio filtered koi pond. It gets quite a bit of direct sunlight, causing algae blooms in the afternoon. We had not replaced the UV light for about a year. Decided that it was time, and found this one for a great price. The bulb is doing its job, the pond is much clearer than it has been for some time. We can even see the new baby koi! They are small. They shipped it really quickly too. If you are on the fence on this item. Order it!

Good stuff. Thanks for delivering quickly. Will buy again.

I only gave it 4 stars because its only been on 3 months, if it lasts a year then itll be 5 stars, did I mention the only time I turn it off is when I clean my canister, so its on 24/7

Perfect

It does exactly what its suppose to; works great. Only issue... it only lasts for about 4 months. So Ive decided to keep more in hand.

The light came well packaged and works perfectly. Great price. The OEM bulb lasted for more than 2 years but this bulb cost one third of the price of a OEM bulb. I bought one before and it is still working after 6 months in my second air filter.

Air purifier

Great buy for a great item