View Full Version : fluoresent lighting

08-03-2009, 05:06 PM
I was given two, 4 ft flouresent lights for free, I want to build a cheap vegetative grow area. I need bulbs, there are so many different types, cool white, warm white, kitchen, shop, etc. I will hang these side by side. What will work the best for growing all types of plants and flowers. And will these work? Are they enough to grow most plants from seedling to a mature plant or flower? Definently on a money budget here, any help would be grateful, Thanks! :p

08-04-2009, 01:34 AM
Not sure about plain cheap bulbs but Ive grown a massive amount of Aloe Vera with two Sylvania Gro-Lux bulbs I got from the local hardware store.

They were about $15 each.

I was searching around youtube this morning & found this vid of a guy using Agrosun bulbs for an indoor food garden & it looks like hes doing pretty good.


08-04-2009, 01:47 AM
Thanks, found these at home depot, ecolux kitchen and bath... 3400 lumens, also residential light also ecolux 3150 lumens. for 6 or 7 bucks. maybe try these first and look to the higher end bulbs later. Thanks again

08-16-2009, 10:41 AM

There's quite a bit to learn about artificial lighting in Hydroponics. I started growing food hydroponically earlier this year and lighting has definitely been, for me, the hardest thing to get right. So, I'm still no expert but I do know this much:

Lumens, or the perceived 'power' of the light output is one important factor but the color of the light is also very important.

You may sometimes notice when you look at the packaging for fluorescent tubes numbers like "5500k" or "2700K". This is an expression of the light's 'color' rated on the Kelvin scale.

You may also see things like "Daylight" "Full Spectrum" "Warm White" and "Cool White".

If you're just getting started and using one 'set' of lights, it's probably best to go with a light from 5500K-6500K, or "Full-spectrum daylight" as this will provide a very wide spectrum for overall growth and flowering.


08-22-2009, 08:39 AM
well i got two side by side, and I bought GE ecolux residential 4100K, and kitchen and bath 3000K I mix these in the fixtures, suppose to be one warm one cool, there T12 40 watt, 48 inch tubes. There working but very slow growth. cheap investment for hobby. If you know a good cheap combo of t12 bulbs (with name brand) let me know. Can't handle those verilux bulbs, to much cash. Thanks, Micro

08-31-2009, 07:54 PM
The 3000k is perfect for your 'warm' or red light, but this part of the spectrum is most helpful to plants that are flowering and fruiting, or 'later in life'.

Cool is what you want when the plants are still growing. Your 4100k is not really cool (blue) enough to support optimum vegetative growth state of your plants. Something between 5000k and 6500k would be better.

There's a limit to what you can do with the type of fluorescent lighting you are using. You'll want to keep your light VERY close to the plants, within an inch or two. You should also select low-light plants like lettuce or spinach.

09-05-2009, 10:15 AM
who makes a 5000k-6500k in 40 watt T12 48"?

09-08-2009, 02:36 PM
those are pretty common... heres the one BGHydro carries:


11-09-2009, 01:47 PM
Try homedepot or lowes if they are in your area.

David G.
11-14-2009, 12:30 PM
I would highly recommend the Verilux lamps over standard T12 lamps. They maintain their enhanced color spectrum for a much longer period of time.

12-21-2009, 06:31 PM
who makes a 5000k-6500k in 40 watt T12 48"?

check walmart they have 6500k but i think 5000k or 5500k is better

01-09-2010, 11:10 AM
for the HID lights I notice spec typically contain the coverage area . However for the fluorescents I've yet to see some kind of chart or correlation between lumens and size of area to be covered.

Can anyone tell me ?

Thank you,