Question about UV

Hi everybody. I'm going to put up a UV-bulb for use in flowering, and I was wondering how long i should run it for each day? I have looked through some other threads, and a lot of people say a lot of different things...
I will be using an Exo Terra Reptiglo 5.0 25w - http://www.exo-terra.com/en/products/compact_fluorescent_bulbs.php , It's the one midpage.
Could someone please clarify how many minutes/hours i should run this?

Thanks in advance

I run mine 4 hours right in the middle of my lights on cycle.its not that bulb but uv nonetheless

same strength in the UV-output?

Snaddehat said:

Hi everybody. I'm going to put up a UV-bulb for use in flowering, and I was wondering how long i should run it for each day? I have looked through some other threads, and a lot of people say a lot of different things...
I will be using an Exo Terra Reptiglo 5.0 25w - http://www.exo-terra.com/en/products/compact_fluorescent_bulbs.php , It's the one midpage.
Could someone please clarify how many minutes/hours i should run this?

Thanks in advance

Click to expand...

You can run that bulb for a few hours in the middle of the light cycle

I use http://www.htgsupply.com/products/agromax-pure-uv-t5-bulb-4-foot and if they are not 3' away you can burn your plants quickly.

qballizhere said:

You can run that bulb for a few hours in the middle of the light cycle

Click to expand...

Thanks, much appreciated

mine probably have more uv and power,im running 216w of t5 lamps,uva and uvb

You guys need to keep in mind that those 5.0 bulbs are only effective out to 12 inch's!
The 10.0 is 20 inch's.

They are not very effective for plant use!

Look at the Eye Hort deep blue UV T-5 HO's

Merc Vapor bulbs at 400w deliver a very strong UV.. care must be taken with them.

Cpl a guys use tanning bed bulbs......search for "UV" or "UVB" and use RM3 as the "posted by member" filter. Try ttystikk as the filter too.....My long posts on that are too old to hit the search....

Good luck

The ultra violet bulbs I am using are on whenever the main light source is on. Much like what happens with the sun.

guys, whats the supposed benefit of running uv, and anyone have research papers with links to provide?

last I recall people were saying higher trich production but...


thanks