AutoAK's

[Troy.No]

SOIL:

How long has this problem been going on? 2 weeks
What STRAIN are you growing? Lowlife's AutoAK's FEM
What was the establishing technique? (seed or clone?) seed
What is the age of your plants? 6 weeks
How long have they been in the soil mixture they are in now? 4 weeks
How Tall are the plants? 25-30cm
What PHASE (seedling, vegetative or flower) are the plants in? flowering
What Technique are you using? (SOG, SCROG etc) none
What size pots are you using? (Include how many subjects to pot) 3.5liters
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) Biobizz All-Mix
What Nutrient's are you using? None yet, got Biogrow,Biobloom&Topmax
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding?
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"?
What method of pH test was administered? Using Strips? pH pen?
How often are you watering? EOD
When was your last feeding and how often are you feeding?
What size bulb are you using? 2x150w
What is the distance to the canopy? 35cm
What is your RH Factor? (Relative Humidity) 40-45
What is the canopy temperature? 24c
What is the Day/Night Temp? (Include fluctuation range) night 18c
What is the current Air Flow? (cfm etc.) 225m3/h
Tell us about your ventilation, intake exhaust and when its running and not running ? continous
Is the fan blowing directly at plants? yes
Is the grow substrate constantly wet or moist? no
Is your water HARD or SOFT? Hard i think (ph 7.1)
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap
Are you using water from a water softener? No
Has plant been recently pruned, cloned or pinched? No
Have any pest chemicals been used? If so what and when? No
Are plant's infected with pests? No


The fans are getting yellow/brownish spots, starts in the bottom. The upper fans are stretching towards the light (upwards).

The lower fans are also getting crispy but the plant never have dryed out.

I have not used any nutrients before now, i added 1ml Biogrow&1ml bloom pr 1liter water last watering.

 

[PrinceOfPersia]

U need to flush that soil.
To much fert there.

 

[Troy.No]

How on earth can i have overferted when the first time i used ferts was last watering?


Recommandations on ferts; 2-5ml pr liter, last watering i used 1ml pr.

 

[JazzJazz]

Are you saying you water with PH 7.1 or is that your tap water PH, but you adjust it before using. If so please state what PH you actually water with and if it is 7.1 you water with than that is too high my friend. With that PH , you may have a slight nute lock and the result is some burning. Bring it down to around 6.2-6.5 but no higher and just plain PH adjusted water next time.It is also possible your soil mix is alittle hot too but that is only an assumption.
If you search on Biogrow you will find that it is quite strong thus always mix fert on the low side if not half and i'm also speaking from experience as the first time i used it by instruction, I burnt my plants bad.Good luck.

Peace,
Jazz

 

[Troy.No]

JazzJazz: Yes, my tap water is 7.1, i havent measured the water after i had nutes in it.

So you think that it is my PH that is too high?

 

[JazzJazz]

JazzJazz: Yes, my tap water is 7.1, i havent measured the water after i had nutes in it.

So you think that it is my PH that is too high?

Yes Troy your PH is too high as it stands...Measure it after you mix with nutes and record..Then water and measure runoff from your pot to see what it is when mixed with your soil and record. Adjust your water and or water/nute mix so that when you water , your runoff will be between 6.2 - 6.5 in soil. Some strains can stand 7.1 and some can't. It's best to keep it where it should be and get the best possible nute uptake from your ladies. And again as a reminder...be VERY easy on the Biogrow as it's very strong.
Hope this makes sense to you and good luck.

Peace,
Jazz

 

[Core]

and all mix needs no food what so ever....its desiged to get tru the whole cyle without nutrients !!

 

[Troy.No]

JazzJazz: Thanks again for answer. I've just checked the runoff and it was 7. My tapwater was suddenly around 8 (!).

I filled a 10liter bucket with water and added one tsp lemon juice concentrate, new pH is now 6.5.


Is it my pH meter that is f''ked or can tapwater change its ph with 1+/- over night?

Does water that stands still (same temp.) over night change pH?


CORE: It prolly is, but dont you think you will get better yield/quality running a little nutes in the soil?

 

[Troy.No]

Hello again.


Here is picture taken today, pH runoff is now 6.8. I've watered it last 2 times with pH 6.5. The plants are yellowing very fast, i see huge difference from day to day. Is this anything i should be conserned about?

To fert or not to fert, thats the question..


Peace

 

[canned abyss1]

Did you check to see if they are root bound? That container looks like it may be to small, they look like they need some nitrogen.

 

[JamieShoes]

Hi Troy

"Is it my pH meter that is f''ked or can tapwater change its ph with 1+/- over night? "

pH will swing over time for sure mate... even a few hours and certainly over night


Now, I'm on my first grow and so you need to double check what I'm about to say - but some amount of yellowing on the lower leaves is totally to be expected during flowering - espeically towards the end...


happy growing
j

 

[Troy.No]

canned abyss1: They are in 3.5liter pots. Im not sure if they are root bound, i'll post some pics of them here very soon so you can see.


Jamieshoes: Thanks mate. I didnt know that about pH. I know the plants will yellow tru the flower stage, the yellowing started really early.

Good luck with your grow

 

[Troy.No]

Here are pics of the roots.

I just checked the runoff pH again and its still 6.8.

I water with pH 6.5, should i go lower to get the pH in the soil down faster?