Fluro question.

[colliefish]

Hi people,

I decided to go with fluro's for the veg stage of my next grow to cut a few costs (electric bill) and also so I can make a seperate flowering room with my hps in it.

I have bought 4 4 foot fluros at 40 watts each.
The bulbs that came with them just said white on the boxes. I know I need warm and cool white but is there any way to tell which I have ie colour as I know some are pinkish and others are blueish.

Cheers

colliefish Reviewed by colliefish on 01-07-2005. Fluro question. Hi people, I decided to go with fluro's for the veg stage of my next grow to cut a few costs (electric bill) and also so I can make a seperate flowering room with my hps in it. I have bought 4 4 foot fluros at 40 watts each. The bulbs that came with them just said white on the boxes. I know I need warm and cool white but is there any way to tell which I have ie colour as I know some are pinkish and others are blueish. Cheers :D Rating: 5

[DojaDave]

Hey Colliefish!,

Cool whites are blue/bluish

Warm whites are pinkish/reddesh

Have a good one!

[IthoughtIknewitall]

Why would you want warm whites during Vegetative growth? A metal halide is better for vegetative growth than an HPS and it puts out blue. An HPS puts out red.

[llamaman666]

having both is fine, and an mh using alot of electricity which is why the man's using floros.

[colliefish]

Hi guys,

Thanks for your help.
IthoughtInewitall; Does that mean I can grow with just cool white. That is the colour of the bulbs I got with the units.
The reason the original question arose was due to a video called "lets grow cronic" whe "MR Green" says he uses both warm and cool for his veg stage.

Cheers again guys

[IthoughtIknewitall]

I have only grown with cool whites. And from everything I have read it is the preferred method. You can grow with warms if you want to though. Its kind of like you can grow veg under a HPS just fine but it is recommended you use a Metal Halide. Or you can grow awesome buds under a metal halide but an HPS is preferred because the red spectrum of light is better for flowering. Also, an HPS 400 Watt will put out more lumens than a MH 400 Watt.

[colliefish]

Hi IthoughtIknewitall,

Thanks for your help. I will save myself a few £'s and just use the bulbs I got with the units.
The exact type of bulb is "t8 white 3500^k halophosphate"
and they are 36 watt each and not 40 watt as I previously posted.

Cheers

[slipknotpsycho]

this should help.....

[colliefish]

Thanx slipknotpsycho

[Bspectral]

Thanx slipknotpsycho

............even better is a mixed variety of 48'' tubes from actinic blue,full spectrum, to red. see pics.........