6500 k versus 10000 k?

**herns** · 05-10-2011, 09:38 PM

+ 1. 6700k bulb for plants.

**IWANNAGOFAST** · 05-10-2011, 10:10 PM

I would highly suggest that you only run the 2x24 t5ho bulbs. This is more than enough light to grow any plant.

bsmith · 05-10-2011, 10:17 PM

Actually the 6500k bulb has more green spectrum which the plants can use more of. When compared with a lux (cant remember if that the right one or not) meter the lower k bulbs provided more output.

jeffro515 · 05-10-2011, 11:05 PM

Thanks for helping Bobby(ham86) out. My kid brother is always asking questions. I wish I would of had that much confidence at his age. And access to the internet.

**audioaficionado** · 05-10-2011, 11:14 PM

I used to think 6500 K lamps were too blue, but now they look about right to my eyes.

If each of your lamps has an individually corded ballast, you can put each one on a separate timer and have a multi lamp midday blast by overlapping the times. Saves the daily hours on each lamp tube and they will last longer.

**oscarsx** · 05-11-2011, 01:33 AM

Nice.. I guess I'll be buying some 10k bulbs

ReefkprZ · 05-11-2011, 09:46 AM

I totally forgot to mention what I run on my tanks for lights. on my 20 long I run a 10k 420nm (actinic) combo I think it looks great honestly.

on my 125g I run 3 54w x 67k N.O. fluorescent (over-driven) and one actinic 110w vho. (icecap 660-009 ballast)
my 125g is 24 inches from soil to surface. this combination allows me to easily push photosynthetic light all the way down to the substrate. at about 2.17 wpg.

Benn · 05-11-2011, 11:00 AM

After reading this thread I went out and changed the lights on my 25g to 6700k and 10000k, the combination of the two makes a really nice bright ( but not overpowering) light, it also makes the greens of my swords appear much more vibrant.

05-10-2011, 09:38 PM	#16
herns Planted Tank Guru (View User Tanks) PTrader: (162/100%) Join Date: May 2008 Location: Los Angeles Posts: 2,472	+ 1. 6700k bulb for plants. __________________ "No CO2/poor CO2 & high light/ ferts = great way to grow algae" - Tom Barr

05-10-2011, 10:10 PM	#17
IWANNAGOFAST I see LEDs (View User Tanks) PTrader: (33/100%) Join Date: Jan 2008 Location: San Francisco Posts: 1,841	I would highly suggest that you only run the 2x24 t5ho bulbs. This is more than enough light to grow any plant. __________________ \|ADA 60H - "RAGE" \| ADA 60F \|48g Riparium \| DIY 24x3watt LED Light Fixture \| SFBAAPS

05-10-2011, 10:17 PM	#18
bsmith Planted Tank Guru (View User Tanks) PTrader: (278/99%) Join Date: Jan 2007 Location: St.Louis, MO Posts: 9,058	Actually the 6500k bulb has more green spectrum which the plants can use more of. When compared with a lux (cant remember if that the right one or not) meter the lower k bulbs provided more output. __________________ L183's 60-p Crypt/CRS Playground Appalachian Allure S.Barbatus & Black C. Schultzei breeding tank

05-10-2011, 11:14 PM	#20
audioaficionado Planted Tank Overclocker (View User Tanks) PTrader: (9/100%) Join Date: Apr 2011 Location: Medford, Orygun Posts: 2,177	I used to think 6500 K lamps were too blue, but now they look about right to my eyes. If each of your lamps has an individually corded ballast, you can put each one on a separate timer and have a multi lamp midday blast by overlapping the times. Saves the daily hours on each lamp tube and they will last longer. __________________ Steve 45 gal tall high-tech : 2-23-12 update Complete CO2 Leak Test : How to build a CO2 regulator Never argue with a fool. Onlookers often can't tell the difference. Growing older is mandatory, growing up is optional. My advice is free and worth every penny.

05-11-2011, 01:33 AM	#21
oscarsx Discus freak (View User Tanks) PTrader: (11/100%) Join Date: Mar 2011 Location: The High Desert, CA Posts: 860	Nice.. I guess I'll be buying some 10k bulbs __________________

05-10-2011, 11:05 PM	#19
jeffro515 Algae Grower (View User Tanks) PTrader: (0/0%) Join Date: Apr 2011 Location: Rocklin, CA Posts: 7	Thanks for helping Bobby(ham86) out. My kid brother is always asking questions. I wish I would of had that much confidence at his age. And access to the internet.

05-11-2011, 09:46 AM	#22
ReefkprZ Planted Tank Enthusiast (View User Tanks) PTrader: (2/100%) Join Date: Aug 2010 Location: bangor, Maine Posts: 935	I totally forgot to mention what I run on my tanks for lights. on my 20 long I run a 10k 420nm (actinic) combo I think it looks great honestly. on my 125g I run 3 54w x 67k N.O. fluorescent (over-driven) and one actinic 110w vho. (icecap 660-009 ballast) my 125g is 24 inches from soil to surface. this combination allows me to easily push photosynthetic light all the way down to the substrate. at about 2.17 wpg. __________________ "[Wabi-sabi] nurtures all that is authentic by acknowledging three simple realities: nothing lasts, nothing is finished, and nothing is perfect." -original author unknown-

05-11-2011, 11:00 AM	#23
Benn Algae Grower (View User Tanks) PTrader: (0/0%) Join Date: May 2011 Location: England Posts: 34	After reading this thread I went out and changed the lights on my 25g to 6700k and 10000k, the combination of the two makes a really nice bright ( but not overpowering) light, it also makes the greens of my swords appear much more vibrant.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode