SowEden
- 5
- 3
Hi everyone,
For years I’ve grown in soil and recently switched to coco and salts and I’ve had difficult time! Plants don’t seem to be 100% happy.
here is some basic info:
- Strain is Dolato
- sealed room w/ RH 55-65% - ambient temps at 75-77 - humidity controlled by Quest dehu / humidifier
- Phantom DE HPS lights dimmed to 60% (600 watts) at 4+ feet above canopy
- Currently 2+ weeks into veg
- canna coco medium (no perlite)
- 3 gallon containers
- RO water taken to 0.1 EC with tap and then add Power Si (silicic acid) and cal mag up to 0.3/0.4 EC (3-4 mL / g)
- Canna Coco nutrients (A + B at 7 to 8.5 mL/g) + Rhizotonic / no Cannazyme
- I’ve alternated between Calimagic and Botanicare CalMag+ to see potential different results...
- total EC if nutrient solution is 1.2-1.3 and- as high as 1.7 when tried to see if they were “hungrier” because of some faint interveinal chlorosis near top of plant (mid to upper canopy, not on lower leaves).
- pH has been between 5.5 and 6.2, drifted back and forth
- Drain to waste top feeding / but as of last 24 hours switched to drip irrigation system
- check runoff EC and it’s between 0.8 and 1.2... runoff pH has been like 6.2+ which seems high to me.
so that’s the general background ...
Plant symptoms include marginal rolling on larger fan leaves near middle to top of canopy, but no real necrosis of leaf margins, but definitely some distorted, wavy leaves and pronounced inter veinal chlorosis and evening hooked tips of new growth - which made me think calcium - and yellow and rolled tips - made me think of iron, especially due to the chlorosis and the upper foliage being affected. The most pronounced leaf margin rolling was when I was feeding 1.7 EC at 6.2/6.3 and leaves felt a bit leathery - so I backed down to 1.1-1.2 EC and flushed a bit but then stepped them back up to 1.3 and brought pH down to 5.5-5.6 in last 24 hours to see if the issue is iron or other micro nutrient. I had started letting the coco dry out a bit more in case it was a calcium / transpiration issue. There has been a little bit of copper spotting near leaf tips on some of the larger fan leaves mid canopy, so was also thinking calcium.
here are some pics from last week and last night. In general they are looking better, but they are clearly not at 100% health. Coco is a pain in the butt. PS - white residue is cal-carb calcium spray.
Would appreciate any coco experts to chime in!
- Sow
For years I’ve grown in soil and recently switched to coco and salts and I’ve had difficult time! Plants don’t seem to be 100% happy.
here is some basic info:
- Strain is Dolato
- sealed room w/ RH 55-65% - ambient temps at 75-77 - humidity controlled by Quest dehu / humidifier
- Phantom DE HPS lights dimmed to 60% (600 watts) at 4+ feet above canopy
- Currently 2+ weeks into veg
- canna coco medium (no perlite)
- 3 gallon containers
- RO water taken to 0.1 EC with tap and then add Power Si (silicic acid) and cal mag up to 0.3/0.4 EC (3-4 mL / g)
- Canna Coco nutrients (A + B at 7 to 8.5 mL/g) + Rhizotonic / no Cannazyme
- I’ve alternated between Calimagic and Botanicare CalMag+ to see potential different results...
- total EC if nutrient solution is 1.2-1.3 and- as high as 1.7 when tried to see if they were “hungrier” because of some faint interveinal chlorosis near top of plant (mid to upper canopy, not on lower leaves).
- pH has been between 5.5 and 6.2, drifted back and forth
- Drain to waste top feeding / but as of last 24 hours switched to drip irrigation system
- check runoff EC and it’s between 0.8 and 1.2... runoff pH has been like 6.2+ which seems high to me.
so that’s the general background ...
Plant symptoms include marginal rolling on larger fan leaves near middle to top of canopy, but no real necrosis of leaf margins, but definitely some distorted, wavy leaves and pronounced inter veinal chlorosis and evening hooked tips of new growth - which made me think calcium - and yellow and rolled tips - made me think of iron, especially due to the chlorosis and the upper foliage being affected. The most pronounced leaf margin rolling was when I was feeding 1.7 EC at 6.2/6.3 and leaves felt a bit leathery - so I backed down to 1.1-1.2 EC and flushed a bit but then stepped them back up to 1.3 and brought pH down to 5.5-5.6 in last 24 hours to see if the issue is iron or other micro nutrient. I had started letting the coco dry out a bit more in case it was a calcium / transpiration issue. There has been a little bit of copper spotting near leaf tips on some of the larger fan leaves mid canopy, so was also thinking calcium.
here are some pics from last week and last night. In general they are looking better, but they are clearly not at 100% health. Coco is a pain in the butt. PS - white residue is cal-carb calcium spray.
Would appreciate any coco experts to chime in!
- Sow