Lighting Growing with T5HO using only 6500K, is it possible?

[musicvoyager]

I have a 1.8 x 2 x 3.2 ft cabinet. I will grow Devon Maid Autos.

I plan on installing a 5x24W Canopy. I've read in many places that mixing 2700 with 6500K is the way to go with autos, but I cannot find 2700-3000K bulbs.

The canopy can run normal 14W T5s, so I was thinking on doing 3 6500 T5HO and 2 T5NO 2700K. But perhaps the plants don't give a damn about colour, and just going with 5 T5HO 6500 is less of a waste of ballast.

Another option is a self made canopy with 8 T5NO, mixing them 50-50.

 

[namvet25]

I don't know if there is a scientific study that says mixing light spectroms,but i have seen it done both ways.I use 6500k for veg and a mix of 60% red and 40% blue for flowering and it seems to work well for me.:booya:

 

[Bonzo Mendoza]

It'll probably work just fine - I mean to say that you will probably get your autos to flower okay - but you are taking a risk of losing out on flowering quality and quantity.

Incandescent light bulbs produce alot of red light but also alot of heat. Is it possible that you could somehow stick a good ol' low wattage Thomas Edison - 40 watt or so - in there without causing too much heat build up? Like a reading lamp or something?

The red light makes the stems grow and causes the plants to produce flowers.

I could not find the spectrum for a 6500k lamp, but here is the spectrum for a 10000k 24 inch t5ho aqaurium lamp (that is an intensely blue lamp) - there appears to be a significant amount of red light:

Almost certainly, the t5 bulbs you are using have a significant red light component.

Your 6500k is probably a "full spectrum" (shoplight?) lamp right? Not a Hortilux or Spectralux right? "Full spectrum" shoplights include alot of reds (and useless greens).

 

[musicvoyager]

It'll probably work just fine - I mean to say that you will probably get your autos to flower okay - but you are taking a risk of losing out on flowering quality and quantity.

Incandescent light bulbs produce alot of red light but also alot of heat. Is it possible that you could somehow stick a good ol' low wattage Thomas Edison - 40 watt or so - in there without causing too much heat build up? Like a reading lamp or something?

The red light makes the stems grow and causes the plants to produce flowers.

I could not find the spectrum for a 6500k lamp, but here is the spectrum for a 10000k 24 inch t5ho aqaurium lamp (that is an intensely blue lamp) - there appears to be a significant amount of red light:

Almost certainly, the t5 bulbs you are using have a significant red light component.

Your 6500k is probably a "full spectrum" (shoplight?) lamp right? Not a Hortilux or Spectralux right? "Full spectrum" shoplights include alot of reds (and useless greens).

I am using Sylvania's FHO T5HO 24W 865 Pentron family. I cannot add incandescent lights because of heat. Only option is using 8-10 normal T5s and add 2700K. Problem is, with 5 T5HO, I am running more watts than with 8 T5NO, and my fixture for the T5HO has a nice set of reflectors, while if I go with 8 T5NO, I don't have reflector. I can buy a cheap double fixture and add aluminium foil to the white reflector, but seems overkill if I can run perhaps cooler with 5 T5HO and the same amount of light as 8 T5NO.