Running Veg bulbs and Flower bulbs together?

David DoCoughKnee · Apr 24, 2023

So I now have two(2) dual Cmh 315s but one has Veg Bulbs and the other has flower bulbs can I run both on a 12/12 ? Only for about a week till I get more flower bulbs, I really want to throw this tent in flower asap

Willie · Apr 24, 2023

Skunky Dunk Farms · Apr 24, 2023

David DoCoughKnee said:
So I now have two(2) dual Cmh 315s but one has Veg Bulbs and the other has flower bulbs can I run both on a 12/12 ? Only for about a week till I get more flower bulbs, I really want to throw this tent in flower asap

I've got 7 light sources over my flower canopy. 3 qbs and 4 cmh 315's.
Spectrum from 2700 to 6500 with 3200 and 4000 included.
Even back when I ran HID's I ran HPS and MH together.

David DoCoughKnee · Apr 24, 2023

Willie said:
Yes!

Skunky Dunk Farms said:
I've got 7 light sources over my flower canopy. 3 qbs and 4 cmh 315's.
Spectrum from 2700 to 6500 with 3200 and 4000 included.
Even back when I ran HID's I ran HPS and MH together.

I’m throwing the other one up on the left side when I get home, I figure I’ll just rotate the plants weekly from one side to the other

DemonTrich · Apr 25, 2023

The ability to run a mixed spectrum of light is better than just 1 spectrum. I wouldn't rotate plants once in the tent. When the growth really takes off, it's gonna be a chore moving the girls around. I may even recommend tossing up a trellis net. Weave and fill in every hole. I went from 18hrs of staking a full room to tossing up a net in 5 mins, then 1hr tops weaving tops thru the net holes.

Tip for trellis nets, DONT use the fabric type. The net material will stick to the trichomes and look like animal hair in your flower. Use the plastic type.

DemonTrich · Apr 25, 2023

Flowering with a veg bulb will make the plants grow tighter nodes, and be slightly shorter than flowering with a flower bulb. A veg bulb also runs a couple degrees cooler than a flower bulb. A veg bulb will also create more frost (trichomes) vs a flower bulb. Vegging with a flower bulb will create a lankier (more distance between branches and nodes).

I see your goods are pretty small. If your crafty, you can modify the hoods in more of a bat-wing type of hood. This will allow the light to spread out more and allow you to drop your hood height a tad. Combine that with a trellis net, and I'm sure your gonna have better yields.

When I ran my flower room, it was 4x 315cmh in air cooled big kahuna hoods, 2 levels of trellis nets, and 1400ppm co2. These hoods are massive, and the bulbs are adjustable (up/down/forward/ back). I ran these about 1.5' above the canopy with out issues, ever in the 6+yrs I ran the room this way.

David DoCoughKnee · Apr 25, 2023

Haircuts and cleanup the bottoms Today . Yes I agree with these hoods something needs to be done about them . Can I run each unit with flower bulb on one side Veg on the other ?

DemonTrich said:
Flowering with a veg bulb will make the plants grow tighter nodes, and be slightly shorter than flowering with a flower bulb. A veg bulb also runs a couple degrees cooler than a flower bulb. A veg bulb will also create more frost (trichomes) vs a flower bulb. Vegging with a flower bulb will create a lankier (more distance between branches and nodes).

I see your goods are pretty small. If your crafty, you can modify the hoods in more of a bat-wing type of hood. This will allow the light to spread out more and allow you to drop your hood height a tad. Combine that with a trellis net, and I'm sure your gonna have better yields.

When I ran my flower room, it was 4x 315cmh in air cooled big kahuna hoods, 2 levels of trellis nets, and 1400ppm co2. These hoods are massive, and the bulbs are adjustable (up/down/forward/ back). I ran these about 1.5' above the canopy with out issues, ever in the 6+yrs I ran the room this way.

I do have CO2 tanks so I should be running with one I was worried about height issues ? It’s my first time ever running in a tent , previous house had no issues but now my wife and I live together and she didn’t like the stink so I grabbed a carbon filter and a tent setup , Thanks for all advice it’s really good

DemonTrich · Apr 25, 2023

Yes, as long ad they are cmh bulbs. It makes no difference in the kelvin/spectrum.

Co2 is great, BUT you need a sealed room. You can make it work in a tent, but your gonna waste a lot of co2. Also, only run co2 IF your room is dialed in 100% and your unable to achieve any more quality/quantity. Co2 can/may/will bring out any grower errors or inconsistencies.

Also, cmh doesn't Pentwater like hps/mh. I would lollipop everything below 2' from the tops. The lowers won't produce much. By removing the lower larf, your allowing the plant to focus its energy/nutrients on the upper portion of the plant. Meaning bigger bids.