My plants have been listen too much to Yellow Submarine by Beatles :(

[bondemand]

Have been flowering these strawberry cream x critical mass for 29 days now under 7x50w COB LEDS with around 1m distance from plants and max output

40% air humidity and 28 degress when light on
50% humidity and 22 degress when light off

Have been using biobizz and growing in 10L of 80% light organic soil + 20% perlite

Photo taken when light is off

Thanks in advance and much love

 

[flylowgethigh]

Too dry soil can fool you into thinking all kinds of bad things. Make that right first. This is a pretty good scientific article:

Applied Sciences | Free Full-Text | Characterization of Nutrient Disorders of Cannabis sativa (mdpi.com)

I also rely on this chart...

 

[window]

Are you adding the one ml of grow to your bloom feed as per boibizz instructions?

Try the Revolver album

 

[bondemand]

Are you adding the one ml of grow to your bloom feed as per boibizz instructions?

Try the Revolver album

I only have acces to the biobizz gro, bloom and topmax.. shouldt it be enough?

 

[Growenhaft]

but that's enough.
however, biobizz soil expects constant food. and it needs the right volume. and the right pouring method.
then biobizz works quite well. tell me something about that then I can probably help you.

the distance between the lamps is high. 1m. it would be better to increase the exhaust air to get the temperature down. then you can get closer with the lamp.

 

[exploziv]

Yup, 28C is a bit high in my opionion. Especially at 40% rh.
other than that, the plants are probably a bit hungry.

 

[f-e]

Investigate Nitrogen deficiency signs. Very common and looks right from what I can see.

Temperature is good. Bit dry, but not the issue.

As said, soil drying too much is possible. More likely you moved to bloom food too soon, exhausting the N supply of your compost. I would be thinking about feeding with the grow and some PK to make it like the bloom but with more N. Of you could go half/half grow and bloom. I know that would mean less P and K if you go 50/50 but N is a big issue for plant weight to. P&K you probably have in a bottle anyway?


Start with pics of N deficiency to satisfy yourself it's what you have before you

 

[Growenhaft]

Temperature is good. Bit dry, but not the issue.

the temperature is good if it has a reasonable distance from the plants with its light source. 1m is way too much. if the temperature continues to rise when he gets closer with the light, then it would be better to bring the temperature down with the exhaust air. but not by increasing the distance. that's what I wanted to say. not that the temperature is currently too high.

that there are signs of deficiency is obvious. without knowing the reason for it but difficult to help. too small pots and incorrect fertilizer watering behavior are always at the top. as long as you do not know this, any help will be a trip into the blue.

 

[Switcher56]

Investigate Nitrogen deficiency signs. Very common and looks right from what I can see.

Temperature is good. Bit dry, but not the issue.

As said, soil drying too much is possible. More likely you moved to bloom food too soon, exhausting the N supply of your compost. I would be thinking about feeding with the grow and some PK to make it like the bloom but with more N. Of you could go half/half grow and bloom. I know that would mean less P and K if you go 50/50 but N is a big issue for plant weight to. P&K you probably have in a bottle anyway?


Start with pics of N deficiency to satisfy yourself it's what you have before you

Personally I don't like his numbers. He gives us (as others have stated, little to go on) but, bringing his VPD in line for early bloom will help. My set up is dialed in with 60% RH for both lights on lights off. 78H, 68L. Late bloom I likes 78/68 @ 55%. When growing indoors, WE, control the/our environment.

 

[window]

Biobizz recommend’s adding 1ml of biogrow to your biobloom throughout flower to keep N levels up as just switching and using bloom alone can cause N levels to drop according to their feeding charts.
it’s not essential but can keep plants greener through flower.

 

[GoatCheese]

i'd say the issue comes from the soil getting too dry. If it was too light feeding the plants would look lighter green. 28C isn't too hot just water then more often. Distance of 1m between the cobs and tops is abit too much, you can lower the lights abit to around 75cm

 

[exploziv]

Personally I don't like his numbers. He gives us (as others have stated, little to go on) but, bringing his VPD in line for early bloom will help. My set up is dialed in with 60% RH for both lights on lights off. 78H, 68L. Late bloom I likes 78/68 @ 55%. When growing indoors, WE, control the/our environment.

Nice to see others running their grow while also looking at vpd, not just rh and temp alone.
Is there a thread I could check to see your grow(s)? I do a lot of experimenting with vpd control for grows and I would love to see what others get as well from looking at vpd.
cheers!

 

[Switcher56]

Nice to see others running their grow while also looking at vpd, not just rh and temp alone.
Is there a thread I could check to see your grow(s)? I do a lot of experimenting with vpd control for grows and I would love to see what others get as well from looking at vpd.
cheers!

... its in my signature. That was an experiment which I repeated. https://www.icmag.com/ic/album.php?albumid=81581

 

[bondemand]

Thanks alot guys - I think the issue is too dry soil in general! i only water every 2-3 days, and maybe to little water!!.. waiting for for runoff but im using those "cloths" pots made of filt for the first time, also my first grow in 10 years.. was a heavy user of this forum back in the days

 

[Switcher56]

Thanks alot guys - I think the issue is too dry soil in general! i only water every 2-3 days, and maybe to little water!!.. waiting for for runoff but im using those "cloths" pots made of filt for the first time, also my first grow in 10 years.. was a heavy user of this forum back in the days

Well, surprise, surprise. I use cloth pots as well. I am on a 3 day schedule of w d d f d d w (where W is water, D is dry(e.g allow to dry) and F is feed). I run 3gal pots (almost 5gal) and feed/water at 1.5l when I do. Adjust your environment and your feed, not to mention your VPD.

 

[flylowgethigh]

Switcher, the light just came on regarding the temps and the color bands on the VPD chart - stage in the lifecycle. Actually in my case, it is humidity, as my temps are pretty constant during lights ON. I work the humidity mostly.

Water is the key. I tried to kill my 1st run twice, nd once I got with the SIP bed nd saw how wet the soil in the 7 gallon bags was, and how much water they took, I knew I needed to do more. About 1/2 gallon a day in 7 gallon bags 30% drainage . I put them on spiders and a pan to see if any comes through, and very little does.

It makes sense to keep the root zone nice and moist, because in soil the wetness is electrolyte. Wet on the bottom, dry on top (except when you have to top water).

 

[bondemand]

Thanks alot to all of you - I will post pictures again in 1 hour when the timer goess off.. Trying to water them a bit more now - Im guessing more water everporate from the cloth pots than plastic ones :O

I think that maybe i have let them dry too much, too many times

 

[bondemand]

Another problem might be that the biobizz i have is 2-3 years old..?

 

[exploziv]

Oh yeah.. at least you have an ideea on what seems to be wrong.

 

[bondemand]