Who manufacturers the bulb? Philips? Osram?

Philips is the manufacturer of our bulbs.

I currently have the tetrapond clear choice biofilter pf-1. can i add this in between the tetra 550 pump & the filter?

Yes, you sure can. It goes outside the pond, so you'd put it a few feet from the inlet of the filter.

Is 9W bulb longer that 5W in length?

The bulbs come in four sizes,viz 5W, 9W, 18W and 36W. I am pretty sure that the 9W will be bigger/longer than the 5W.

Need a philips tp16787 tetra 9watt replacrment lamp for the puv-1 is it still available

i just listed 4 ---tetra 16787 --there not cheap and i only have 4 left ...

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Pond 9-Watt Replacement UV Bulb for GreenFree UV Clarifier | For Greenfree UV Clarifier UVC-9, Replace Every Pond Season, Operates Up To 11 Months

Product ID: 1847723

Details

Brand
Tetra
Bulb Shape Size
F10
Light Type
Fluorescent
Special Feature
Long Lasting
Wattage
9 watts

⏳8,000-hour long lifespan

🌊Covers ponds up to 1,800 gallons

💡9W high-efficiency UV bulb

€ 35.20

Duties & taxes included

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Description

💧 Keep your pond pristine and green-free—because your outdoor oasis deserves the best!

TRUSTED LEGACY - Backed by Tetra’s decades of aquatic expertise, delivering proven pond clarity since 1951.
SEASONAL POWERHOUSE - Designed for up to 11 months of continuous, reliable algae control—replace annually to maintain peak performance.
EFFORTLESS MONITORING - Convenient viewing window on the GreenFree UV Clarifier lets you confirm bulb operation at a glance.
TAILORED FOR YOUR POND - 9-watt bulb optimized for medium-sized ponds up to 1,800 gallons, ensuring perfect fit and power.
CRYSTAL CLEAR WATERS ALWAYS - Effectively destroys algae reproduction for visibly cleaner ponds within days.

The TetraPond 9-Watt Replacement Bulb is a high-efficiency ultraviolet light source designed for the GreenFree UV Clarifier. It destroys algae reproduction in ponds up to 1,800 gallons, providing up to 8,000 hours (11 months) of continuous operation. Regular seasonal replacement ensures sustained algae control, keeping your pond clean, clear, and free of unsightly green algae blooms.

Specifications

ASIN	B00474FIBG
Accepted Voltage Frequency	100 to 120 Volts and 60 Hertz
Additional Features	Long Lasting
Best Sellers Rank	#20,673 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #69 in Water Garden & Pond Treatment
Brand Name	Tetra
Bulb Base	Wedge
Bulb Shape Size	F10
Color	White
Color Rendering Index	80
Connectivity Technology	Normal bulb
Control Method	App
Controller Type	Push Button
Customer Reviews	4.6 4.6 out of 5 stars (1,298)
Global Trade Identification Number	00046798195276
Incandescent Equivalent Wattage	40 Watts
Indoor Outdoor Usage	Outdoor
Is Electric	Yes
Item Dimensions W x H	1"W x 6.75"H
Item Type Name	Replacement Bulb
Item Weight	0.1 Pounds
Light Color	Green, clear
Light Output Maximum	100 Lumens
Light Source Operating Life	8000 Hours
Light Source Type	UV
Light Source Wattage	9 Watts
Light Type	Fluorescent
Manufacturer	TetraPond
Manufacturer Part Number	19527
Manufacturer Warranty Description	See label for details.
Material Type	Plastic
Model Name	Tetra
Model Number	19527
Number of Items	1
Package Quantity	1
Power Consumption	9 Watts
Power Source	Electric
Shape	Tubular(T)
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Pond Algae Control
Style Name	Classic
UPC	046798195276
Unit Count	1 Count
Voltage	120 Volts
Wattage	9 watts
White Brightness	100 Lumens

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