How Often Should You Replace Lamps?
When it’s costing you more not to.
Loss in light is directly proportional to loss in yield. Every 1% loss in light results in a 1% loss in yield.
Regularly replacing your lamps is one of the quickest & cheapest ways of getting a consistently high yield.
Your Gavita lamp loses 5% of light after a year – that’s a 5% loss in yield.
To maximise your yield, replace your Gavita lamps every year.
What Wavelengths can be used by Plants?
For growth, plants can only use wavelengths of light between 400nm – 700nm. These wavelengths are known as the PAR (Photosynthetically Active Radiation) range.
To get an accurate measure of how good a grow light is, you need to find out what your light’s PPF (photosynthetic photon flux).
Your PPF reading will tell you how many how many particles of light (photons) from the PAR range are emitted by your lamp per second, measured in micromoles.
What are micromoles (µmol)?
Micromoles tell you how many particles of light (photons) from the PAR range are emitted by your lamp per second.
Your micromole count is known as your photosynthetic photon flux (PPF).
1 micromole = µmol is 602 quadrillion particles of light (photons)!
• Gavita Pro Plus 1000W Lamp = 1,264,200 particles of light
That’s a big difference (per second!)
Remember that Gavita lamps also emit light from outside the PAR range that can be used by your plants… just not for growth.
What about wavelengths outside the PAR range?
Light outside the PAR range can’t be used for growth, but it has other benefits.
UV-A & UV-B, for instance, are known to:
• Boost pest resistance
• Enhance medicinal /anti-oxidative properties
• Improve taste & aroma
However, most standard HPS lights don’t emit much UV-A & UV-B. To really get the benefits of a wider spectrum, use a Gavita supplemental LEP (Plasma) grow light.