Home » Oase REPLACEMENT UV Bulb for Filtral Filters

Oase REPLACEMENT UV Bulb for Filtral Filters

SKU: 76970
$39.99
For Model

Replacement UVC bulbs for OASE Filtral all-in-one pond filters with integrated UV clarifiers. These genuine OASE UVC bulbs eliminate green water and control algae by destroying single-celled algae as water passes through the filter.

Key Features:

  • Official OASE replacement UVC bulbs for Filtral filters
  • Eliminates green water caused by suspended algae
  • Controls algae growth for crystal-clear water
  • Easy to replace—no tools required
  • Long-life UVC technology

Why Replace UVC Bulbs:

  • UVC output diminishes over time, even if the bulb still lights up
  • After 8,000-10,000 hours (approximately one season), effectiveness drops significantly
  • Old bulbs won't eliminate green water or control algae effectively
  • Annual replacement ensures optimal algae control
  • Recommended replacement: Every spring at the start of pond season

Two Models Available:

5W UVC Bulb (Model #76004)

  • Fits: OASE Filtral UVC 400
  • Power: 5 watts
  • For smaller ponds with Filtral 400 filter

9W UVC Bulb (Model #76005)

  • Fits: OASE Filtral UVC 800
  • Power: 9 watts
  • For smaller ponds with Filtral 800 filter
  • CLICK HERE TO ORDER

13W UVC Bulb (Model #76006)

  • Fits: OASE Filtral UVC 1600
  • Power: 13 watts
  • For larger ponds with Filtral 1600 filter

What's Included:

  • 1 genuine OASE UVC replacement bulb for your specific Filtral model

Note: Make sure to select the correct wattage bulb for your Filtral filter model. The 5W bulb fits Filtral UVC 400, and the 13W bulb fits Filtral UVC 1600. Bulbs are not interchangeable between models.

Frequently Asked Questions

Q: How often should I replace my Filtral UVC bulb?
A: UVC bulbs should be replaced annually, typically at the start of the pond season in spring. Even though the bulb may still light up and appear to be working, the UVC output diminishes significantly after about 8,000-10,000 hours of use (roughly one season of operation). After this time, the bulb won't effectively kill algae or eliminate green water, even though it's still glowing. Replacing the bulb each spring ensures you have maximum algae-fighting power for the upcoming season.

Q: My bulb still lights up—do I really need to replace it?
A: Yes! This is a common misconception. The visible light you see is not the same as the UVC light that kills algae. UVC is invisible to the human eye and operates at a specific wavelength (254 nanometers) that damages algae DNA. Over time, the UVC output degrades while the visible light remains. So your bulb can look perfectly fine and still be ineffective at controlling algae. If you're experiencing green water despite your bulb lighting up, it's likely time for replacement.

Q: How do I know which wattage bulb I need?
A: Check your Filtral filter model number. If you have a Filtral UVC 400 (for ponds up to 400 gallons), you need the 5W bulb (model #76004). If you have a Filtral UVC 1600 (for ponds up to 1,600 gallons), you need the 13W bulb (model #76006). The model number is usually printed on a label on your filter unit. The wattage is also marked on the old bulb itself. If you're unsure, measure the length of your old bulb or contact us with a photo of your filter and we can help identify the correct replacement.