yellow cheese

[Guest 48988]

first noticed 5 days ago
What STRAIN are you growing?
buhda cheese
What was the establishing technique? (seed or clone?)
seed
What is the age of your plants?
3 weeks since switchover
How long have they been in the soil mixture they are in now?
since birth
What PHASE (seedling, vegetative or flower) are the plants in?
3 weeks into flower

What size pots are you using? (Include how many subjects to pot)
11liter square pots
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
Canna Professional
What Nutrient's are you using?
canna vega/flores+bio boost
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
1.6 EC - (water is 0.4 )
How often are you feeding?
If flowering, when did you switch over to using Bloom nutrients?
On switchover

How often are you watering?
When was your last feeding and how often are you feeding?
What size bulb are you using?
old used 600 watt with cooltube
What is the distance to the canopy?
6-10 inches

Tell us about your ventilation, intake exhaust and when its running and not running ?
can filter through cooltube running 24/7
Is the fan blowing directly at plants?
ossilating fan
Is the grow substrate constantly wet or moist?
moist
Is your water HARD or SOFT?
VERY HARD
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Tap water settled for 48 hours

HI

Any thoughts?

 

[loc]

Looks like they need some cal-mag plus,and less water.

 

[ForbiddenFruit]

These plants are showing signs of a Phosphorus deficiency.

It appears to be affecting the upper half of the plant while the lower growth is healthy.

The cause of your problem could be several different things.

1) The root zone isn't getting a chance to dry out between waterings, too much moisture

2) The roots have fully colonized the pot, used up all the available nutrients and now need stronger dose's of canna vega/flores+bio boost

3) The plants were over fertilized which caused a lockout and or theres a PH problem

This is my opinion

 

[Guest 48988]

Thx fellas.

Ive given them a few days to dry out. Should i give them a flush then dry out again... or go straight back onto the nutes?

 

[mexilandrace]

how's your ph?

 

[Guest 48988]

Cant currently answer that question. Ph test gear is out on loan.

The condition is getting worse though and starting to affect other plants.