plant is real light green

Got a few problem plants The whole plant is becoming real light green the one is worse actually more yellow tint to the whole plant day 14 of dark cycle

U in coco? Also what’s your ph I’m assuming with that size grow you have a rez that feeds them all or holds it for hand watering so maby it’s just a little built up from being a lighter feeder? I always go buy what people who grow20+years tell me “what’s the run off tell you” ”don’t chase the run off listen to it” if in coco people will always say it’s inaccurate to test coco run off but you have to get a sample at first run off which tells you how shes doing after last feed and another as runoff stops Which will tell you how she’s doing this feed...I test coco 2x every day what’s going in what’s going out and I’ll tell you for a fact every time I see ph run off drops below 5.6 I always see issues

I’m in pro mix I’m not really watering to get much run off just a little I’ll have to try and check it again my ppm has been about 650 to 750 3 waterings next one I’m flushing or at least straight water

Cousinbob said:

I’m in pro mix I’m not really watering to get much run off just a little I’ll have to try and check it again my ppm has been about 650 to 750 3 waterings next one I’m flushing or at least straight water

Click to expand...

What lights?

I’d check your ph runoff

more details are needed

coreywebster said:

What lights?

Click to expand...

Roi680 led

2 weeks of dark cycle I have been mixing bloom and veg nutes was giving silica but I think I’m done with that now lights are a foot away co2 1300 to 1450 temp in low 80s pro mix in fabric pots 7 gallons ph usually around 6.5 using ro water

Cousinbob said:

2 weeks of dark cycle I have been mixing bloom and veg nutes was giving silica but I think I’m done with that now lights are a foot away co2 1300 to 1450 temp in low 80s pro mix in fabric pots 7 gallons ph usually around 6.5 using ro water

Click to expand...

12" with that sort of power might be part of the problem. Possibly a bit of light stress?
Did you plant stretch to the light when you flipped or have you been raising the light to maintain the same distance ?

coreywebster said:

12" with that sort of power might be part of the problem. Possibly a bit of light stress?
Did you plant stretch to the light when you flipped or have you been raising the light to maintain the same distance ?

Click to expand...

Actually they have barely grown any taller at all since I’v been on bud cycle

Cousinbob said:

Actually they have barely grown any taller at all since I’v been on bud cycle

Click to expand...

Any idea what par your hitting under that light? It is a beast, only thing that throws me off not been sure is your using co2.

I’m using co2 1250-1550 range I think it hits like 1750 1800 from 12”