Lighting How long before changing t5 bulbs

[Heavily Medicated]

How long do you all go before changing to new bulbs using t5. I have a perpetual grow 20/4, is a new set of bulbs once a year seem OK, or are my bulbs really too dim by then.

 

[namvet25]

The only real way to no is with a lumen meter.Unless you see a real dropoff in plant growth I would think once a year is about right.I take mine out after every grow and clean them along with your reflector.

 

[oddjob]

The only real way to no is with a lumen meter.Unless you see a real dropoff in plant growth I would think once a year is about right.I take mine out after every grow and clean them along with your reflector.

True that, about once a year is the norm.

 

[Bud Wiser]

Check this out........ says every 6mos of continuous use due to "cathode decay"

 

[Eyes on Fire]

YUP id agree with T5 bulbs.two soild and you can push three auto grow per set of veg bulbs.flowers last a lil longer i think.but i was gonna say 5 months maybe 6 for optimum results.

 

[Rus]

Dang I been rooting clones under mine for going on 4 years now bahahaha guess if it still works why fix it?
Edit well I slept on it and decided to buy some new bulbs.