So im not exactly sure i suspect a phosphorus deficiency or pottasium deficiency but wanna make sure in my assesment. The bottom leaves were also showing the same signs. Like light brown spots and some yellowing.
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Nitrogen, calcium and potassium deficiencies. What’s your run off PH and PPMs Growmie. If you’re feeding a balanced diet of nutrients most deficiencies are PH related 
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COPY/PASTE the below list into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)
-What strain, Seed bank, or bag seed (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution, runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,
-Co2; Yes, No
If growing Hydro some additional questions:
-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution
Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.
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What shows for the calcium deficiency?, nitrogen and potassium i can see that definitely, for the runoff aint got a potstand yet so no way to know for sure. Im feeding foxfarm liquid big bloom as needed.
What strain, Seed bank, or bag seed (photo or auto) jack herer auto from dispo seeds
-Age of plant 40 days old ish
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF foxfarms soil
-Vessels: Type and capacity of container (fabric, plastic, etc) fabric
-PH and TDS of Water, Solution, runoff (if Applicable) from 6.5 to 7
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS ph tester
-Indoor or Outdoor if indoor, size of grow space indoor grow
-Light system List brand and wattage/spectrum ffull spectrum
-Actual wattage draw of lights 30 w
-Current Light Schedule 24 hours
-Temps; Day, Night 79-81
-Humidity; Day, Night 40-50
-Ventilation system; Yes, No, Size fans
-AC, Humidifier, De-humidifier, 1
-Co2; Yes, No no
If this is accurate, you will likely need close to 6 - 8 times that much light to grow one cannabis plant. Cannabis is very light hungry.
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Its actually 40 just checked but yeah just difficult the other light i have is to much 
dosent have protortional red and blue spectrum so using what i got ill definitely buy a new light in the future
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This is an important number to know. Tells how much you are feeding and how much the plant is actually eating.
As stated this is far too insufficient for cannabis. What is your other light that is too strong? Uneven red and blue distribution isn’t such a big deal compared to low output.
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Im not very sure, the reason also why i hesitate using it is it actually lightburned my previous run pretty easily and in a small grow tent with no adjustable light setting its a disaster wairing to happen which is why im stickint to the 4p watt light at the moment. As for the ppm how do i check that? Runoff? Cause i cant check runoff rn rill next run no pot stands i have fabric pots so some water is released and air is better as well to prevent overwatering just kinda tough at the moment with the setups