feeding and co2.

[dragunn]

how do most of you fertilize your crop when using co2?

i started out just thinking i would water more using the same

concertration of fertilizer(19 mill of canna per gallon).

but now i have better results increasing the concertration by around

25%.before that i had a serious yellowing.

 

[satyr]

Co2 PPM = Ec x 2

1000 PPM Co2 = Ec 2000 /1000PPM nute solution

'depending on where you are in bloom. thats only a general rule of thumb. Watch your ladies, you need at least +25 C, high light intensity and low humidity. All these factors has a say in what they eat.

anyway, with Co2 the will take almost what you give them. If running 1500PPM they tend to run out of N early,so stay longer on the Veg nutes. I recommend 1200 PPM = 2400 Ec in full bloom, but again its strain and grower dependent.

Have fun

Satyr

 

[COrganic]

Without getting too scientific, CO2 basically allows your plants to respirate/metabolize nutrients at a much higher rate. The idea with using CO2 for bigger yields relies on you most likely having to also feed heavier. There is also a correlation between CO2 usage and ambient temperatures. If your flowering room is kept at 70 degrees fahrenheit, your plants will only be able to utilize roughly 800ppm of CO2, any excess will not be used. If you raise your temperatures to say 85 degrees, your plants will be able to utilize 1300ppm+ of CO2. One other factor here would be light intensity. Both the numbers I just mentioned are based on 65 lumens per square foot. What wattage lights are you running? Do a little quick math and figure out if you are coming close to this intensity of light, then consider temperature and feeding and you should be able to push your plants to the higher yields that CO2 can allow. Good luck.

 

[dragunn]

i been on these forms for years and not one time has any one mentioned increasing the concentration of fertilizer.they mention increased feeding.

 

[COrganic]

I suppose you could increase concentration or frequency, whichever gets you the results you want. Personally I never feed stronger then 900 ppm during bloom but I hit 900 ppm with EVERY watering/feeding. I don't do plain water until flushing and even then I usually add evaporated cane sugar.