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CFL Growlight

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Old 10-30-2010, 08:45 PM
Amigatec Amigatec is offline
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Location: Oklahoma
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Default CFL Growlight

I bought a 125 watt cfl Growlight and am trying to grow tomatoes with it.

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Old 08-13-2011, 11:32 AM
furniture@finewoodstudio. furniture@finewoodstudio. is offline
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Join Date: Jun 2011
Posts: 3
Default Think you will need more light and 2 spectrums

I tried to grow tomatoes with a cfl 200W grow light. Would get buds but they would never open. Learned that tomatoes grow and finish at 6500K, but bloom/ set fruit at 2800K. When I added a CFL 125W 2800k light the buds openned within one week and fruit set. I also added another CFL 200W 6500K to produce enough light so the fruit would ripen.
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Old 08-13-2011, 02:22 PM
jamromhem jamromhem is offline
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Join Date: Jul 2011
Location: Central Florida
Posts: 143

Something I would check with your cfl is whe K value of the bulb. You want it at 5000-6500k to let the plant grow. (6500k being a little better)

You don't need 1000Watts for a tomato plant :P

You could eaily get by with about 200-300W in flouresent tubes, and as the flowers start to set you just add some 2700K bulbs to the fixtures at about a 1/3-1/2 mix of 2700K to 6500k. (1 2700K per 2 6500k or an even mix)
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Old 09-06-2011, 10:59 AM
crad crad is offline
Join Date: May 2011
Posts: 68

I do not know if it is cost effective for CFL as it takes to many lights I am struggling with my setup. but I am trying to grow several plants and I am trying it in a mixed setup. I am building new setup and going to grow tomatoes in one and peppers in another.
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Old 09-08-2011, 02:26 AM
Derek Derek is offline
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Join Date: Sep 2011
Posts: 4

Hey Guys,

I'm having a similar problem with my tomato plants.

It has grown to a tremendous size, but its like "stuck in veg". The basil plant I have right next to it is doing great, but the tomato just puts out "pre-flowers" that just sit there. I'm going to have to do some major pruning, I don't have any space left in there for more useless greenery!

I was wondering if you guys know what color spectrum (like nm) the "bloomer" 2800K light mentioned above is?

I thought it was my light cycle (I've been running the lights 24/7. ) but do you guys think its the color spectrum? I've got 620,660,460,and 720 nm going.
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Old 09-08-2011, 02:49 AM
GpsFrontier GpsFrontier is offline
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Join Date: Mar 2009
Location: Lake Havasu AZ.
Posts: 1,855

Do you have any pictures of your setup? How big are the tomato plants? How old are the tomato plants?
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Home Hydroponic Systems
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