Lighting Choosing clf lamp

[Guriman]

I would like to know the difference between?
5500K
And
6500K

Are the two spectra match the growth period??

What do you think of this lamp?
http://www.ebay.com/itm/E27-220V-55...334?pt=LH_DefaultDomain_0&hash=item1e75e4d6be

or

http://www.ebay.com/itm/1-pc-150W-S...166?pt=LH_DefaultDomain_0&hash=item1e6d938886

 

[namvet25]

6500k has more blue spectrom and the 5500 has more red.6500k should be used for vegging.Those ebay bulbs are 220 volt and most house current is 110 v.Unless you can get 220 volt those can't be used.

 

[Guriman]

If you already have
4 * 32w 1750lom 6500k
+
2 * 45w 2950 lom 6500k

Add another two 150w 5500k --- like the link:
http://www.ebay.com/itm/1-pc-150W-S...166?pt=LH_DefaultDomain_0&hash=item1e6d938886

Does it benefit the growth phase or not?

Flowering stage I will use 400 hps lamp

Thanks for the help

 

[Balarama]

Of course it's better to have more light
I'd definitely add those lamps. Not the ideal spectrum, but quite usable.

 

[GoAuto6]

6500 would be best for veg........

 

[gradolabs]

Yep. CFL spectrums are measured by their color temperature in Kelvins - the higher the number, the more blue biased the spectrum will be, and blue light is suited for vegetative growth. It will also contain a healthy percentage of green and red light but blue light will be more pronounced.

Similarly, the lower the number, the more red biased and thus good for flowering the CFL will be, though it too will also have blue and green light as CFL's produce a wide spectrum of light.

Hope this helps.

 

[Guriman]

Thanks for the help everyone
Then realized by adding the two lamps will help the growth phase
I will use lamps growth phase
Flowering stage will use hps lamp

 

[Balarama]

There will be no harm(except for higher electricity bill) if you leave those 5500K during flowering beside the HPS. Yield should be bigger.

 

[markieaaryn]

look man it is really simple to get confused here is a chart that tells it all. Now you know the kelvin number remains the same, it is not additive. Only the lumen output if the bulbs can be added. With that said, 2700 for flower...6500 for veg LOOK AT THE CHART