Lighting Par Map

[MesaBoogie]

Has anyone done a par map for these or is there one posted already ?

Thx.

 

[Mañ'O'Green]

The 3500K lamp

From the cobshop.net

 

[MesaBoogie]

The reason I ask is because I think I'm hitting my plants with too much light throughout the day. I've just been starting to look into DLI and trying to figure it out. In a 3x3 I'm running 3 autocobs, a spiderfarmer sf1000 and a Mars cob 24 hours a day. I'm keeping the cobs backed up to 26" during flower but I still think I may be over doing my DLI. I keep the lights on 24/7 to keep temps up. I really don't want to add a heater to the mix. I always figured 1 light per plant, but now I'm not so sure.

 

[elcoloan]

I'll be doing one for the 3500K 60W Autocob 2018 model in about two weeks...

 

[MesaBoogie]

sweet, can't wait for the results.

 

[HemiSync]

I run 4 3500k autocobs without reflectors in a 4x4x7 with a fifth one at 2700k or 6500k depending on bloom or veg. From the first day I put them in the tent, I have to peg them to the ceiling or my babies will be so short and bushy from not stretching at all. plus I have seen the light stress from having them to close. They stay that way for the entire grow.

 

[MesaBoogie]

Hey thanks for the reply Hemi. I've been chasing some sort of deficiency for the last year and I'm starting to think it's not a deficiency at all, but rather light stress and too much DLI. Deficiency's can look like so many things It can drive a guy crazy. I'm always getting these spots and lime green leaves at the start of flower and always towards the top of the plant. More cal/mag, less cal mag, PH lower and higher, epsom salts new nutrients ect , it can drive a guy crazy. So I've noticed jacking my lights up has shown progress. My last grow I ran the cobs 26" above the canopy, I'm gong to try 30 this time. What sort of height do you use in veg and bloom for your cobs ?

 

[HemiSync]

What sort of height do you use in veg and bloom for your cobs ?

To be honest, as I said I pull my cobs all the way to the top of an 80 inch tall tent. The girls are in 3 gallon pots on the floor in a tray, fed from a reservoir and for the most part, I let them grow to the light. If they start to stretch in veg, I will lower them, this rarely happens. If they won’t stretch enough, I will deem it time to remove the 6500k cob. I have on some strains even turned off one of the four 3500s for a day or two just to tease them into stretching a little.

I learned the hard way trying to get these Cobs as close as possible. So I place them as far up as I can and let the plant tell me. Now full on flower you can get up close and personal, but you still have to be careful.

 

[HemiSync]

The two on the left are photos and two on the right are autos.

This is at week four from seed.

 

[Cap'nCrud]

Very nice.
How many of bigSmo's autocobs would you run in a 4x8x72 tent? I know sometimes we can't extrapolate these things.
Thanks.