Whats wrong with her?

[The Alchemist]

There are a few leaves on my plant that are looking way too narrow and i'm wondering what the cause of this could be.Also you can see from the pics that some of my leaves are twisted.Anyone know why. My temps range between 20 and 28 degrees celcius but my humidity is quite low, 35 on average. Could this be the cause of it? If so what problems can i expect eg low yield etc. I can't afford a humidifier at the moment and to be honest i think its a bit late to be adding one as i'm flowering them in the next 3 weeks.
Please help me with this!

 

[The Alchemist]

Any help or advice??? Anyone???

 

[sproutco]

Maybe a little zinc deficiency. Have you tested the soil ph? Directions are in my signature. Your aiming for no higher than 6.2 in a soilless mix. (5.6-6.2)

Obvious solution is the seedlings need fert with micros containing zinc.

Other possible reasons:

>too wet; allow pots to dry well between watering
>too cold; no lower than 68f (20c)
>too much phosphorus
>too much alkaline earth metals especially magnesium; this could be too much lime with calcium and magnesium
>too much copper; copper should not equal zinc in your ferts...plants need alot more zinc...sometimes ferts have .05% of both zinc and copper together in them
>too much iron
>ph too high
>rootbound

 

[The Alchemist]

Would it have anything to do with humidity co my humidity is pretty low 30-40rh? It could be a zinc deficiency, should i just add more nutes or is ther any household product thats high in zinc(you seem to know all that kinda stuff)

 

[sproutco]

What's you ferts? You should check the micro level in them. What is it? See if copper is at the same rate as zinc.

 

[The Alchemist]

Not sure cos i don't have the ferts with me at the moment. I'm using Bio-grow and Root Juice, both by Bio-Bizz if thats any good to you.

 

[sproutco]

I tried to find the analysis of the fert but could not. That was just something to check. Try checking runoff ph. Directions to do this are in my signature below. Are you adjusting your fert water after mixing to about 6 using an acid or base? This prevents ph surprises. Those pots are quite large. You must really let them get dry before watering. Try changing your conditions like watering, ph, or temp before adding more zinc than in your normal ferts. I can give you a zinc sulfate spray rate if needed. Report back when you get more data/info.

 

[TanzanianMagic]

My temps range between 20 and 28 degrees celcius but my humidity is quite low, 35 on average. Could this be the cause of it?

You know it.

Your humidity levels should be closer to 75%-80%. I firmly believe that marijuana and other green leaved plants like to drink water from the air. I think this also gives a break to the root system. High air humidity also reduces evaporation, which allows you to keep soil moisture as low as possible. This is for the seedling/clone and vegetative states of course. Once budding starts, you want lower humidity levels to avoid fungi and toprot.

Low humidity levels during the budding phase will actually help bring out the resin in your plant.

There are many ways to increase the humidity. You could install a little fountain in the room, or more simply, have a couple of large tubs of water stand around. Add in an aquarium heater, and even more water will evaporate. Add some hydrogen peroxide to the water, and algae or fungi won't be a problem.

However, it is still good to keep track of air temperature, plant temperature, air humidity, soil humidity, soil ph and the ph of your water.

The key words are - control your environment.

Another thing I have found - when air humidity is too low, it is too tempting to compensate by overwatering the plant. This causes root rot, which introduces systemic fungi, encourages fungus gnats, etc.

This plant, with its leaves curled inward, looks like it is overwatered.

Soil humidity can be relatively low, when air moisture is relatively high.

 

[sproutco]

Is this your plant too?

 

[The Alchemist]

I usually water till ther is run off then wait till its dry an inch or so down. My Ph is between 6-6.6 and i'm using organic soil.Thanks for your help sproutco its much appreciated.

I'll try for one of those aquarium heaters, i've been trying to raise the humidity for the last month but to no avail and i can't afford a humidifier.

 

[sproutco]

Just letting the soil get dry an inch or two? Sounds like overwatering. Ph above 6.2 in soilless mix like peatmoss, perlite, etc...it looks like is in your soil will lead to deficiencies. Even in soil mixes, above 6.5 is going to cause problems. So, try dryer and lower ph.

 

[The Alchemist]

I'm using a soil mix, its All-Mix by Bio-Grow It consists of 20% sphagnum peat moss, 35% garden peat, 10% high quality organic BIOBIZZ Worm-Humus , 30% perlite and 5% Pre-Mix. I got Ph up today so i'm gonna regulate the ph today. How long should i leave my plant dryout.Two-three inches down?

 

[The Alchemist]

Ya that other pic is my plant aswell!

 

[sproutco]

The whole bucket should get light. You may try letting the plant go to slight wilting (not fully wilted!) to see how dry it can go. Then water slightly sooner the next time to prevent any wilting. 20% of what you apply at the top when watering should pour from the bottom drain holes.

 

[The Alchemist]

That leaf was hiddden under others so thats why it died , its only vissible there cause i start LST'ing the plant. I'll use your advice for the watering.Thanks for your help!

Spose you wouldn't have any info on my Root Juice Thread?

Thanks again Sproutco!!