bulb SNAFU - unplanned spectrum change

a9ymous

Well-Known Member
I've got a sunlight systems light with two double-type T5 bulbs. I had a spare set of 2700k bulbs but have done two small auto grows previously using only the 6500k and never swapping them out. I saw no need to really, the plants didn't seem to require a switch.

Unfortunately I have some autos that were only 2+ weeks old when I came home to find hte 6500k bulbs had blown out (I use LED panels as sidelights so they had that at least). Because I hadn't planned ahead, I only had 2700k bulbs on hand to replace them. The plants have been on 2700k for almost a week now, and I've received the replacement 6500k bulbs, but now I'm wondering if I should be swapping them again. The plants are doing well but are still only 25 days from seed. What do you guys think? Put the 65s in or leave the 27s?

happy T day btw~

a9
 

technical dan

Active Member
I like to do a mix of those. IME the difference is spectrum between those two kelvin temps is not an issue for the plants. So you can do whatever you please with the bulb combo. Now if you (as I have done) go from those nice white bulbs to an led panel at 3weeks from sprout the plants wont be happy .... ended up with a 10" tall plant in a 3gal pot little tiny nugget tree but is was really tasty smoke.
 

a9ymous

Well-Known Member
Thanks for the input. I felt like it might not matter except I didn't want to confuse the plants. My last grow was a wreck, we have nothing now and can't afford to screw this one up! Thinking I'll swap the bulbs back out since now I have two sets of 6500k. I'll save the 2700s for if I ever get back around to trying photoperiod weed again.
 

tekdc911

Well-Known Member
i run straight 2000 k hps right now and mine are fine
i grew with 2700k 68w cfl's for years
more of the red spectrum in flowering more of a blue in veg is what you want
for any plant really
but they do just fine with bulbs in the 2000 k range
 
Top