Philips ALTO BULB 400W HPS

PhilipsSKU: 102-22213

CAN $24.99
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Discover the Philips ALTO HPS 400W Bulb

High Pressure Sodium lamp with clear tubular outer bulb, high output and long reliable lifetime

High Pressure Sodium lights produce an orange/red spectrum and is best for flowering plants.

The orange-red light stimulates plant hormones and encourages it to flower.

The best way to light your grow room is with a combination of blue and red/orange light, to keep plants compact and flowering happily.

This is best done by using a Halide then changing to a Son T style HPS or by using a multi-spectrum lamp.

Plant growth (photosynthesis) is not then determined by lux or energy, but by the photons from the blue to red (400–700 nm) part of the spectrum.

This is called growth light! For horticulture, natural daylight (global radiation) is in most cases measured in terms of energy (J or W) with a solar meter.

This meter is generally positioned on top of the greenhouse.

The value of global radiation is important for climate and humidity control in the greenhouse.

Extremely high quality sodium bulbs that produce slightly more lumens than standard models and last much better than the competition.

Philips 400W HPS bulb is ideal for plant growth.

  • It contains photons that can be measured in terms of energy.
  • This 400W bulb is generally placed on top of the greenhouse, and used to help the climate and humidity control.
  • These lamps are developed for maximum growth light, and are the most efficient light sources available for horticulture.

Package includes
1x Philips ALTO BULB 400 W HPS


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After your purchase, the items are subject to the respective manufacturer’s warranty policy.

These policies can be found on the original manufacturer’s website or by contacting them.

Indoor Growing Canada is not responsible for replacing, repairing or any costs associated with your item while under warranty.

Indoor Growing Canada will assist you in your warranty claim by helping you coordinate with the original manufacturer.

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