Grow Lights

[haleybobl]

Ok, so everyone is aware that you need to change your UVB bulb every 6 months, but is there a limit on Grow light bulbs too? I have never been a plant person, so I don't have a clue if you need to change them out as often as well.

 

[Jordan]

Yes, they diminish just like the UVB tubes. Most have lowered benefits by six months. I personally just change mine once a year and they still seem effective.

 

[sandrachameleon]

Excellent question. Depends on the brand and the original K and L values, I think. In my greenhouse I change out half of them every year or so. THere is a noticable difference between the old bulbs and the new ones!