Okay, maybe that title is a little sensationalized. This is hardly a smackdown – it’s barely a schoolyard slap fight – but I’m gonna stick with it because it’s so dumb that it made me laugh aloud when I typed it. Today I kicked off a new lil’ experiment in which I’m going to compare a 3000K vs. 5000K LED grow light.
I have 2 space buckets (you can check out the build here), and in each bucket, I’ve got a single Vero 18 COB LED. The only difference between the 2 buckets is that one of the COBs has a color temperature of 3000K, and the other has a color temperature of 5000K. My goal for the experiment is to see what difference, if any, the color temperature makes on the growth of the plants, as they progress from the young fellas you see in the pictures below, right through into the fruiting stage (if I can manage to go that long with killing them). I will be running these on the same timer for 14 hours a day, and will water both buckets at the same time.
I admit, this isn’t a great experiment as I only have one pepper and one tomato plant in each bucket, but I’m hoping there will still be a visible difference despite my small sample size. If, after awhile, the tomato plants take over the whole bucket, I’ll take note of the peppers’ progress up to that point, then probably boot them out. Perhaps by then, I’ll have another couple lights to put the peppers under to continue the experiment.
Here are the 2 buckets I’m going to be using. They are identical in every way, except for the COB color temperatures. Each COB is actively cooled by a CPU fan and is being driven at 1.4 amps by a Mean Well LPC-60-1400.
I’ve selected 2 “Mexico Midget” tomato plants and 2 Caramel Moruga Scorpion peppers for this grow. These plants were all started under the same lights in my main grow tent, and I tried to choose pairs that were most similar in health and size.
What do you think will happen? Will the color temperature make a difference, or will the end result be the same? Make your predictions now so you can say “I told you so” afterwards!