More Light Equals Greater Yields

Light glorious light is the main principle that most growers use when growing in doors.  Ever since people started growing plants under lights one common denominator has arisen amongst all growers and that is that you can never get enough light.

Well of course there are limits to the amount of energy your plant can absorb and there is much argument and debate about this and of course it differs to species of plants.

The accepted maximum levels for large dense flowering crops are between 800 - 1200 µmol/m2/s anything additional is just wasted without additional Carbon Dioxide being added to the room.

However there is no grow light in the world that can compete with mother nature on PAR output.

So imagine plants that are grown in a warm sunny climate such as California can ultimately make much more use of additional light than plants grown in countries with little sun, this can plainly be seen in the size of fruits harvested in plants grown under the Californian sun compared to plants grown under the UK sun.

Your Leafs are Solar Panels

If you imagine that the leafs of your plants are solar panels that send the power gathered into photosynthesis then you will begin to understand this principle better.

Photosynthesis converts light into chemical energy within the plant which then gives the plant fuel to perform certain activities, much like solar panels generating electricity to allow you to perform certain activities within the household, so the more absorbable light the plant gets the more it can grow.

So the healthier a plant is and the more leafs it has then the more energy it can generate and ultimately put back into growth and a larger yield.

So What is PAR?

PAR stands for  ‘Photosynthetically Active Radiation’ and don’t worry it’s not the bad kind of radiation.  PAR is measured in units of micromoles per sqm - per second (µmol/m2/s)  known as Photosynthetic Photon Flux Density (PPFD).

PAR is without a doubt the most significant way to measure light in the spectral range of solar radiation from 400nm to 700nm. 

As humans we can only measure light intensity as we see it with either lumens or lux but of course plants are not humans but are photosynthetic organisms. We like to say 'Lumens are for Humans'.

Our Budmaster II range of led grow lights has more PAR output than any other LED or HID grow light at a useable range of 24 inches plus.

What do we mean by a useable range?

Well the closer you have any light to a plant then the more it will photosynthesize until the light gets too close and starts to damage the plants.

So for example a standard 600w HPS hanging guideline to avoid heat stress is 2ft above the plants canopy however hanging any led grow light this close to your plant will seriously cut down on the effective coverage so with LED to get the effective coverage you generally need to hang the light further away and be safe in the knowledge that the penetration and par is high enough. By having more effective coverage you cut down on the amount of lights and energy needed to grow your plants.