Hi you guys! Just started my second growth and I’m a but worried about the small stained/discolored leaves and tips on these new born babies. Also, I’m noticing curly (inward) leaves on half of my plants. I tried identifying the stains according to images but I can’t pinpoint what it is exactly. Would anyone please provide advice? Pics at bottom
Any help will be appreciated
Strain; ak48 feminized
Soil in pots
What is strength of nutrient mix? no nutrients
Light system, mh400w veg 18/6, hps400w in flowering 12/12
Temps; Day 88F, Night: mesurement to come
Humidity; Day:40%, Night: mesurement to come
Ventilation system; variable blower on a carbon filter at low speed
AC, Humidifier, De-humidifier: 1 basic stationary clip fan
Your ph is way to high for one, in soil it needs to be 6.3-6.8, 6.5 would be perfect. Day time temperatures are to high, they need to go down about 10-13 degrees, so around 75-78 degrees
Wow…your P. H is way out of range. Flush her with P.H ed water at 6.5
Check your run off after each flush u til you read 6.3 - 6.5
It looks to be the start of Calcium being locked out by PH troubles
Very acidic soils with excessive potassium, dry and or wet soil. Lack of calcium in the soil may cause too acidic soil. This may cause to Mg or Iron deficiency or very slow stunted growth
Here is my sample photo
I hope this helps
Should I go with pool ph products, aquarium ph control? With your suggestions, I plan on balancing a huge quantity of “ready” water and repeat when the supply gets low. I heard that you could just add vinegar to lower you ph, would that be a good way to proceed?
professional products have preservatives and stabilizers that maintain pH better than vinegar
Use ph down and yea vinegar can but if your not careful it can end badly, if you use vinegar 1/4 tsp per gallon and @kabongster proves a great point
Finally, I recalibrated my pH meter and it turns out my pH is at 6.7,6.8. The problem looks similar to the one I got in my first growth but then it appeared much later in the process.AK-48 issue: Nute burn or Potassium deficiency or am I off?
I really want to save my babies
Any help would be appreciated.