Some help please?

[sahima]

Hi to all of you fellow growers.
I have some problems with my plants and i need some help to identify the reasons. The plants are almost 4 weeks from seed. The temps are 27-28C, the humidity 60-70%, there is good air circulation and plenty of space.
But things are not very nice. Most of the plants have some kind of mutation, they developed from the start incredibly fat wide leaves which are curling like
''v. Some of the lower ones are turning yellow now. At first i believed it was the low P.H of the soil mix i was using (at the bag writes a p.h range 5.5-6.5) , so i transplanted them 4 days ago using all-mix soil which has the right p.h, but things are not better now and the last days i have slow growth.
Maybe i must feed them? I have only give a small dose of biogrow before the transplant but i was thinking that the new soil would cover their needs.
I will try to find a cam and post some pics and thanks in advance for every response.

 

[medicaluser420]

I dont know what problem is but feed them they need to eat I start giving them a weak nutrient dose at about 2 weeks old. That is most likely the problem. Is the new growth forming all retarded and twisted cause then it is the nutes for sure. Back in the day I tried to grow with no nutes grew to about 5-6 weeks then died. Anyway Best of luck to you.

 

[Sleepy]

But things are not very nice. Most of the plants have some kind of mutation, they developed from the start incredibly fat wide leaves which are curling like
''v. Some of the lower ones are turning yellow now. At first i believed it was the low P.H of the soil mix i was using (at the bag writes a p.h range 5.5-6.5) , so i transplanted them 4 days ago using all-mix soil which has the right p.h, but things are not better now and the last days i have slow growth.
Maybe i must feed them? I have only give a small dose of biogrow before the transplant but i was thinking that the new soil would cover their needs.
I will try to find a cam and post some pics and thanks in advance for every response.

what is the pH of your water??

pH of the runoff??

what strain?

how close is your light?

"small dose of bio-grow"...???--how small of a dose??

without seeing a pic, i would say: flush with water, pH adjusted to 6.5...and feed at 1/2 strength.

how is the soil's drainage??

how often are you watering???

 

[Dr. D]

Need pics to really tell your probs..what you really need to do is test the ph of your run off water..then go from there..all-mix is very hot soil so dont feed anymore....yet!..the slowing in growth may be from the transplant..if the run off has a low ph then up the water you use and obviously the other way round if its high...peace

 

[sahima]

Thanks ,for the replies. There are 4 sativas (grapefruit-cinnamon from female seeds), the light is a 430W son ago and 45cm away from the plants. I give 1ml bio grow for every littre of water (maybe less). I water the plants every 3rd-4th day when the soil is dry enought until the pot drips from the bottom .
I don't have a ph meter but the soil i am using now has a p.h range 6.2-6.7 and good drainage.
Today i think they will need their first watering after the transplant, i am gonna feed them with bio grow.
I forgot to mention that there is some droopiness after the dark period (4 hours).

 

[Jnugg]

Does your soil mix have any dolomitic lime in it?What is the soil comprised of (Pine Bark,Sphagnum or any kind of peat mosses or any decomposing plant material that will lower soil pH over time)?

Next time you whip up a batch of planting mix add about 1.5-2 tablespoons of dolomitic lime (powdered) for each gallon of soil and mix in.This will help buffer the soils pH.

Start using some R/O water ($0.25 a gallon at the machines) which has a neutral pH of 7.0 but sometimes comes out as low as 6.5 but thats ok.

When you fertilize your plants start off using only 1/4-1/2 strength of what the bottle says and gradually learn how much ferts the plants need.When you mix your ferts with water they will lower the waters pH especially when using a flowering fert which naturally have more Phosphorous and Potassium and a small amount of Nitrogen.

Once you have mixed your ferts with your gallon of water check the pH and adjust as neccesary with a pH up or down solution (EJ has an organic up and down) so that it reads a 6.2-6.8 pH.

Check the pH of your soils runoff every few days to make sure it is fine and flush your growing medium every 2-3 weeks to avoid toxic salt buildups.

Also try and keep the RH% under 70%, (unless rooting clones or germing seeds) 60-65% is fine.