Wanderlust
- 31
- 8
I'm experiencing abnormally high co2 readings and yellowing plants about 10 days after transplant. Plants are still vegging. The room is sealed and co2 enriched with an electronic ignition co2 generator. The meter has been reading "hi" which means above 2500 ppms. I have cut the gas to the generator so it hasn't run in days, but the readings continue to read "hi" every day. I don't believe its a calibration problem or proximity of the meter to ballasts/cables. I let the room air out for a while and ppms will drop down to 500 or so, but will jump back up to 2500+ the next day. There are 8 beds of 9 plants under 1000W lights being spread under trellis. I usually don't feed the plants for the first two weeks after transplant, and supplement one compost tea extraction each week. I water every 3-4 days to encourage root growth. This method has always worked for me in the past. I don't know why its not working now. Plants are yellowing from the top down, and lower fan leaves are dropping. It looks more like a nutrient lock out, as some look like strange deficiencies I don't see often. I will post pictures later today...
1. Are you growing from seed or clones?
Clones
2. How old are your plants?
1 month - 2 weeks in a 1 gallon and about 10 days after transplant into 10 gallon
3. How tall are your plants?
They are under a trellis so hard to say, probably 20" or so
4. What size containers are they planted in?
10 Gallon smartpots
5. What is your soil mix?
Roots Organics
6. How often do you water and what type of water do you use?
Tap water, rather hard. about 250ppm out the tap. Aerated 24 hours before use
7. What is the pH of your water?
watered at roughly 6.8
8. What kind of fertilizer do you use and what is its NPK ratio?
Haven't fed yet, but transplanted with superthrive and roots excelurator, and have given one watering with compost tea extract (50% worm casting, 50% humus, extracted through a fine mesh with 2 cups kelp and 2 cups fish hydrosolate per 50 gallons of water). This is usually fine for the first couple weeks as roots grow into the already mended soil.
9. Do you foliar feed or spray your plants with anything?
Not yet
10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
Transplanted under eight 1000W HPS for 8000W total.
11. How close are your lights to the plants?
24"
12. What size is your grow space in square feet?
312 ft2
13. What is the temperature and humidity in your grow space?
80 degree F and 60 percent humidity
14. What is the pH of the soil?
haven't tested, its fresh out of the bag only 10 days old
15. Have you noticed any insect activity in your grow space?
There was a minor thrip attack and everything was successfully treated with spinosad. Plants in mother room and other extra vegging plants were not transplanted and in another room do not have the symptoms.
16. How much experience do you have growing?
Few years
1. Are you growing from seed or clones?
Clones
2. How old are your plants?
1 month - 2 weeks in a 1 gallon and about 10 days after transplant into 10 gallon
3. How tall are your plants?
They are under a trellis so hard to say, probably 20" or so
4. What size containers are they planted in?
10 Gallon smartpots
5. What is your soil mix?
Roots Organics
6. How often do you water and what type of water do you use?
Tap water, rather hard. about 250ppm out the tap. Aerated 24 hours before use
7. What is the pH of your water?
watered at roughly 6.8
8. What kind of fertilizer do you use and what is its NPK ratio?
Haven't fed yet, but transplanted with superthrive and roots excelurator, and have given one watering with compost tea extract (50% worm casting, 50% humus, extracted through a fine mesh with 2 cups kelp and 2 cups fish hydrosolate per 50 gallons of water). This is usually fine for the first couple weeks as roots grow into the already mended soil.
9. Do you foliar feed or spray your plants with anything?
Not yet
10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
Transplanted under eight 1000W HPS for 8000W total.
11. How close are your lights to the plants?
24"
12. What size is your grow space in square feet?
312 ft2
13. What is the temperature and humidity in your grow space?
80 degree F and 60 percent humidity
14. What is the pH of the soil?
haven't tested, its fresh out of the bag only 10 days old
15. Have you noticed any insect activity in your grow space?
There was a minor thrip attack and everything was successfully treated with spinosad. Plants in mother room and other extra vegging plants were not transplanted and in another room do not have the symptoms.
16. How much experience do you have growing?
Few years
