Keep your pond free of green algae with Tetra Pond 5 UV Replacement Bulbs. UV light kills suspended green algae, preventing it from taking over your pond. Tetra Pond 5 Watt UV Replacement Bulbs are high-efficiency bulbs that work with Bio-Active Pressure Filters with UV and TetraPond UV Clarifiers to remove algae blooms within 5 days and keep your pond algae-free. They have an 8,000-hour lifetime and will effectively kill algae for up to 11 months.
Powerful UV clarifier keeps pond water clean and "green free"
UV light effectively destroys unsightly green pond water algae
Enjoy crystal clear pond water with minimal effort and maintenance
I have it didn’t see any change in 2 days u have to have it up right in on bottom out on top don’t have it laying down after one day say 30 percent change
Replacement 5 watt UV bulb
on May 11, 2020
Purchased a clarifier from a local pet store 2 yrs ago and this yr it needed a new bulb. Found them on chewy.com at a substantial savings plus they arrived within a week! Good job
Expensive bulb that doesn't work
on Apr 30, 2017
Easy purchase online. Fast shipping. The only problem is that the bulb doesn't work. At first I thought it was because you can't see the UV light in the daytime. Then when I went out at night I thought I could see if it was working. Still couldn't see anything. Figured I'd give it some time to clear up the water in the pond like the last bulb always kept it but still no change in water. I assume it doesn't work now.