Philips Son‑T PIA Plus HPS Bulbs are a high‑performance lamp engineered specifically for the flowering stage of plant growth. Built with tempered glass and a precision‑filled sodium discharge tube, it delivers a strong red‑dominant spectrum that supports robust bloom development.
With a rated brightness of 89,000 lumens and an E40 socket, this lamp offers excellent energy efficiency, long service life, and reliable ignition thanks to Philips’ PIA (Philips Integrated Antenna) technology. Its high luminous efficacy and absence of lead make it a dependable, environmentally considerate choice for horticultural lighting.
Designed for low maintenance and stable output over time, the Son‑T PIA Plus is widely trusted by growers seeking consistent flowering performance and strong light penetration.
Key Features:
Optimised for flowering – Red‑dominant spectrum supports strong bloom formation and fruiting.
High light output – Produces approximately 89,000 lumens for deep canopy penetration.
Long, reliable service life – Superior Philips technology ensures stable ignition and excellent lumen maintenance over time.
Energy efficient – High luminous efficacy provides strong output per watt, reducing energy waste.
Environmentally considerate – Manufactured without lead (Pb), supporting safer disposal and reduced environmental impact.
Low maintenance – Designed for consistent performance with minimal degradation across its lifespan.
E40 socket compatibility – Fits standard horticultural HPS fixtures
Care and Maintenance:
Allow full warm‑up and cool‑down cycles
HPS lamps are sensitive to thermal shock. Always let the bulb reach full operating temperature before switching off, and allow it to cool completely before turning it back on. This protects the arc tube and extends service life.
Handle only when cool
Never touch the bulb when hot. Allow at least 10 to 15 minutes for cooling before removal or adjustment.
Avoid touching the glass with bare hands
Oils from skin can create hot spots on the glass envelope. If contact occurs, clean the bulb gently with isopropyl alcohol and a lint‑free cloth.
Keep fixtures and reflectors clean
Dust and residue reduce light output. Wipe reflectors and glass covers regularly to maintain maximum lumen delivery.
Replace on a schedule
Although the rated lifespan is 24,000 hours, horticultural performance typically declines after 12 months of daily use. Most growers replace their HPS lamps annually to maintain consistent results.
Â
