Par and T-5 Bulbs

[JAMSOURY]

Is Par a good representation of the t-5 bulbs are still good? Or not really?

 

[slayerhellfire]

Yes

 

[JAMSOURY]

Yes

Is there a significant drop in par, say over the course of a year?

 

[slayerhellfire]

You would have to find out what you start with and go from there the apex par meter is great because it constanlty measuring

 

[Potatohead]

They drop about 15-20% in the first month and then slowly degrade. Like another 5% over the next twelve months. I typically change my fuller spectrum bulbs around twelve months and the blue bulbs more like 15-18 months.