erwingruber
Member
Hello everyone , I have several years of growing under my belt with good results .
Recently I boost my growroom with CO2 and more watts per square foot .
As I describe above plants growing under 90 watts/sqf with CO2 supplementation
@ 800 ppm CO2 early veg , @ 1200 ppm CO2 late veg and flower lowered after week 6-8 depending on strain .
As long as I stay @ 800 ppm of CO2 even the complete flowering stage no defs appear but I do not get that explosive growth of 1200 ppm .
When I induce 1200 ppm my feeding recipe appears to missing something even if I Rocket sky the EC of my solution to the point of severe nutrient burn .
The deficiency is always the same in a couple or runs and in a couple of strains.
(look at pics below) Begins with brown spot’s in the leafs , followed by yellowing to complete death of the leaf.
Although harvest’s weights remain remarkable @ 1200 ppm with the defiances I know I need to fix this .
Plants defiances look to respond good with CalMg foliar feeding in veg put I cannot foliar feed at flowering .
I’am growing in Hempy’s and I was thinking about ph lockout cause even if I am watering
With ph @ 5,2 in veg runoff comes out @ 7,1 tommorow I will measure flowering runoff but it not meant to measure runoff in Hempy’s .
Any ideas from CO2 experienced growers will be very very helpful
[FONT="]Below you can see pics from different stages
[/FONT]
Recently I boost my growroom with CO2 and more watts per square foot .
As I describe above plants growing under 90 watts/sqf with CO2 supplementation
@ 800 ppm CO2 early veg , @ 1200 ppm CO2 late veg and flower lowered after week 6-8 depending on strain .
As long as I stay @ 800 ppm of CO2 even the complete flowering stage no defs appear but I do not get that explosive growth of 1200 ppm .
When I induce 1200 ppm my feeding recipe appears to missing something even if I Rocket sky the EC of my solution to the point of severe nutrient burn .
The deficiency is always the same in a couple or runs and in a couple of strains.
(look at pics below) Begins with brown spot’s in the leafs , followed by yellowing to complete death of the leaf.
Although harvest’s weights remain remarkable @ 1200 ppm with the defiances I know I need to fix this .
Plants defiances look to respond good with CalMg foliar feeding in veg put I cannot foliar feed at flowering .
I’am growing in Hempy’s and I was thinking about ph lockout cause even if I am watering
With ph @ 5,2 in veg runoff comes out @ 7,1 tommorow I will measure flowering runoff but it not meant to measure runoff in Hempy’s .
Any ideas from CO2 experienced growers will be very very helpful
[FONT="]Below you can see pics from different stages