Lights on constantly

[SHRED]

I've been running a 21/3 cycle for 49 days now.

Buds are stacking up.

I'm seriously considering running 24/0 to keep humidity levels in check now that they are stacking up and during lights off the humidity climbs pretty high.

I've read 24/0 can stress the plants but I'm 49 days in so I'm not sure if it would harm them at this point.

I have lots of fans and air movement within the tent. Just need my thermostat controlled exhaust fan to cycle more.

For those running 24/0 do you think this will be okay?

 

[throxic]

Should be fine with autos. You'll have to reduce the PPFD so you're still in the same DLI range. GL!

 

[SHRED]

Should be fine with autos. You'll have to reduce the PPFD so you're still in the same DLI range. GL!

I'm already running high PPFD with my Viparspectra KS3000 running at 100% and close.
Thanks for the reminder.

 

[SHRED]

Should be fine with autos. You'll have to reduce the PPFD so you're still in the same DLI range. GL!

Check out the lights out data.
Humidity spikes.

 

[throxic]

Ya, that's way too high. Anything over 65% can become problematic. If you can't add a dehumidifier, going 24/0 will at least keep the spikes out, but you'll have to lower PPFD to keep your DLI the same. (ie. dim the light a bit, but set it to 24/0) If you have a light meter, you can dial this in, if not, maybe dim the light 10% and set to 24/0.

 

[SHRED]

Ya, that's way too high. Anything over 65% can become problematic. If you can't add a dehumidifier, going 24/0 will at least keep the spikes out, but you'll have to lower PPFD to keep your DLI the same. (ie. dim the light a bit, but set it to 24/0) If you have a light meter, you can dial this in, if not, maybe dim the light 10% and set to 24/0.

I'm using a UT383 BT meter with the PPFD Meter app.

Here's at 12" and 21 hours on.

.

 

[throxic]

Nice, you'll be able to dial it in. If you do decide to go 24/0, just make sure your DLI is the same. Any other questions, let me know.

 

[SHRED]

Nice, you'll be able to dial it in. If you do decide to go 24/0, just make sure your DLI is the same. Any other questions, let me know.

My light adjusts in 25% increments.
Here it is at 75% power, the same distance only 24 hr calculated.

I may just leave at 100% power and raise it a bit to match.
Thanks
.

 

[throxic]

In that case at 75% 24/0, you would just need to physically lower the light a little to match the DLI of 100% 21/3. My lights are on these ratchet/rope things, if you have those, you can adjust that to get the DLI you want.

 

[throxic]

If lowering the light is not possible, 75% 24/0 would still work. Running at 650-700 PPFD 24/0 will still produce great results and remove the humidity spikes you're experiencing.