Bulb Replacement

What is your re-lamping strategy?

Is it wait until they burn out? Or do you proactively plan, so that all houses/bays/zones/rooms are all changed out at the same time to ensure consistent light levels?

Since the size and scope of grow facilities can be very large, group re-lamping can be very expensive and labour intensive if you don’t have a well thought out strategy in place. Our sales managers are happy to advise growers on how to plan a well thought out re-lamping schedule, to spread the financial impact while ensuring optimal light intensity is maintained.

How often should lamps be replaced?

Research shows that for every 1% increase in PAR light, you will see an equivalent increase in plant growth and yield.

The same principal applies in reverse whereby each 1% loss of PAR light will result in 1% loss in plant growth and yield. So, maintaining the highest possible output from your grow lights is critical to maintaining optimal crop yields.

If the useful PAR output of a lamp depreciates by roughly 1% per 1,000 burning hours, then after 10,000 burning hours then that lamp will only output 90% of the original output, which translates to roughly 10% less crop yield.

For high pressure sodium lamps, replacement is typically recommended after 10,000 burning hours to ensure optimal light output.

Metal halide lamps depreciate faster than HPS lamps – and are typically recommended to be replaced after 8,000 hours of normal operation.