Eheim · UV clarifier
reeflexUV
- Tank size
- 80–800 L
- UV lamp
- 7–11 W
Planted tanks prone to green water, or anyone wanting a bit of extra clarity and pathogen control.
3 models
Boyu · UV clarifier
Boyu Submersible UV Steriliser
A UVC lamp in a quartz sleeve that sits inside the tank or sump rather than inline on a hose. Six sizes from 4 to 20 W.
Updated
4–20 W6 models
Will it suit my tank?
litres
Best for
Knocking out a green water bloom or running in a sump on a larger system.
Worth knowing
An open UV lamp in the display tank needs care, and it will not fix the nutrient imbalance behind an algae bloom.
What stands out
- 4 to 20 W UVC
- Quartz glass sleeve
- Goes directly in the tank or sump
Models and specs
| Model | UV lamp | Dimensions (L × W × H) |
|---|---|---|
| UV-4W | 4 W | 28 cm long |
| UV-6W | 6 W | 35 cm long |
| UV-8W | 8 W | 43 cm long |
| UV-10W | 10 W | 47 cm long |
| UV-15W | 15 W | 58 cm long |
| UV-20W | 20 W | 82 cm long |
- Brand
- Boyu
- Voltage
- AC 230/115 V, 50/60 Hz
Figures from the maker's published specifications. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all uv & sterilisers
Eheim · UV clarifier
reeflexUV+e
- Tank size
- 300–2000 L
Larger planted tanks where you want UV only for set hours, or want it tied into an Eheim digital setup.
4 models
Oase · UV clarifier
ClearTronic
- Tank size
- up to 600 L
- UV lamp
- 7–11 W
Canister-filtered tanks prone to green water, or keepers who want an extra safeguard against outbreaks.
3 models
SunSun · UV clarifier
AUV UV-C Lamp
- Tank size
- up to 2600 L
- UV lamp
- 3–14 W
Tanks or sumps with green water or where you want to cut free-floating bacteria.
6 models
Frequently asked questions
Quick answers about the Boyu Submersible UV Steriliser, drawn from its specs.
Who is the Boyu Submersible UV Steriliser best for?
Knocking out a green water bloom or running in a sump on a larger system.
Is there anything to watch out for with the Boyu Submersible UV Steriliser?
An open UV lamp in the display tank needs care, and it will not fix the nutrient imbalance behind an algae bloom.
What are the alternatives to the Boyu Submersible UV Steriliser?
Other uv & sterilisers worth comparing: Eheim reeflexUV, Eheim reeflexUV+e, Oase ClearTronic. Add any of them to the compare table to see the specs side by side.
What sizes does the Boyu Submersible UV Steriliser come in?
6 options: UV-4W, UV-6W, UV-8W, UV-10W, UV-15W, UV-20W.