Lumatek zeus 600w pro 2.9 too much light?

G

Greenfingerz89

New Member
Hi,
I'm new to Forum and new to growing. I have set up in a 1.2 × 2.4 × 2.2 tent for my first grow with 2 Lumatek zeus 600w pro's. 1 is the 2.7 and 1 is the 2.9. On the 2.7 side everything is going really well I think with big healthy plants and buds but on the 2.9 side the growth and bud development seems slow. Could this be from too much light from the 2.9 and would it be worth dimming down from 100%. Has anyone heard of this? Any advice would be much appreciated.
Glookies strain
4 weeks into flower (do plants look OK? For 4 weeks turning to 12/12)
Attached is a photo 10x glookies
 
Rocket Soul

Rocket Soul

Well-Known Member
What is your climate/temp/rh like? Is it constant in the tent, one side to the other?
The numbers seem to indicate quite minimal difference between one side and another but youre already using a lot of power per square foot. Id turn it down slightly.
 
Rocket Soul

Rocket Soul

Well-Known Member
I had a look at the specs: theres a slight difference in spectrum: 2.7
ZEUS-LED-GRAPHS-600W-PRO.png
Looks like 3500K plus a lot of 660nm reds.
Heres the 2.9:
ZEUS1000WXTREMECO2-Graphs.png
Looks like 4000k + even more 660nm. This is one of the ways to increase par per watt: using high efficiency reds with a slightly colder cct spectrum. But if you add too much red you can easily get over lit/saturated.

Id defo turn down the 2.9 until your plants look happier. Also have you measured the par intensity?
 
vostok

vostok

Well-Known Member
Greenfingerz89 said:
Hi,
I'm new to Forum and new to growing. I have set up in a 1.2 × 2.4 × 2.2 tent for my first grow with 2 Lumatek zeus 600w pro's. 1 is the 2.7 and 1 is the 2.9. On the 2.7 side everything is going really well I think with big healthy plants and buds but on the 2.9 side the growth and bud development seems slow. Could this be from too much light from the 2.9 and would it be worth dimming down from 100%. Has anyone heard of this? Any advice would be much appreciated.
Glookies strain
4 weeks into flower (do plants look OK? For 4 weeks turning to 12/12)
Attached is a photo 10x glookies
Click to expand...

check the light footprint .. IMO leave a temp gauge at top most leaf height
and adjust to suit

good luck
 
O

oill

Well-Known Member
Greenfingerz89 said:
Keeping temp at 27c and rh is at 40, it only seems to be the 1 side below the 2.9 and has been stunted growth all the way through cycle. The only difference I can think of is the difference in lights bro
Click to expand...
That's too warm and too dry if you aren't using co2.

Lights should be about 36 inches away.

Got pics?
 
G

Greenfingerz89

New Member
oill said:
That's too warm and too dry if you aren't using co2.

Lights should be about 36 inches away.

Got pics?
Click to expand...
Oh ok I have kept the lights about half a metre away from canopy. To be honest as this is my first grow I'm still learning and get very mixed information. The girls are sleeping at the moment so will upload photos once lights on. I am not using CO2 as I thought this is only beneficial in a sealed environment? I did post Pics yesterday but for some reason seem to have been deleted.
Thanks for the reply guys
 
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G

Greenfingerz89

New Member
When I was researching most sites were saying I wanted to keep humidity levels at around 40 during the flower stage. What would be an ideal environment during this stage of the cycle?
 
G

Greenfingerz89

New Member
Also I was running my temp at 25c but a friend told me to up it a few degrees as he said they would be happier for this. Would it be beneficial to drop back down at this point.
Thanks in advance for the help guys
 
G

Greenfingerz89

New Member
Rocket Soul said:
I had a look at the specs: theres a slight difference in spectrum: 2.7
View attachment 5027145
Looks like 3500K plus a lot of 660nm reds.
Heres the 2.9:
View attachment 5027146
Looks like 4000k + even more 660nm. This is one of the ways to increase par per watt: using high efficiency reds with a slightly colder cct spectrum. But if you add too much red you can easily get over lit/saturated.

Id defo turn down the 2.9 until your plants look happier. Also have you measured the par intensity?
Click to expand...
Thanks for the advice, I have now turned down to 75% hopefully this will have a positive impact. Will let you know
 
Southernontariogrower

Southernontariogrower

Well-Known Member
Greenfingerz89 said:
Oh ok I have kept the lights about half a metre away from canopy. To be honest as this is my first grow I'm still learning and get very mixed information. The girls are sleeping at the moment so will upload photos once lights on. I am not using CO2 as I thought this is only beneficial in a sealed environment?
Thanks for the reply guys
Click to expand...
Co2 is benificial in a sealed environment but over 1000 umol may need enhancing up from the 400ppm or so of available co2. Breathing on them helps believe it or not. If temps are high and light is intense you might want to enhance a bit and feed higher if you do. Or just turn the light down. Ive grown with 600w and now using 660w and does make it it more chalenging, thats only a 60 watt change. Btw, nice choice of lights. With co2 higher rh can be benificial to growth also.
 
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