Quote Originally Posted by malus69
As the title says I'm in the last week of vegetation when suddenly some odd holes appeared on the leaves of three of my plants (out of nine). Some tip curling up as well.

What is your experience level? first timer

Your Equipment:
1) Light: 400W HPS Agro
2) Height of light: Around 10" from plant tops.
3) Type of deflector: Parabolic
4) Air Intake: Small passive intake in the door of the room plus opening for 10-30mins twice a day at least
5) Do you have an exhaust fan and a circulation fan? Yes both
6) What are the bulb wattages, kelvin ratings, and schedule? 430W (30W of blue spectrum light) 58k lumens running at 18/6


Your medium:
7) Biobizz lightmix :: BioBizz
8) 14l
9) Did you use peat pucks (or similar) to root clones or germinate seedlings? No

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting? Tap water left in a container for at least 24-48h before used. water pH ~8 before adjusting
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...) aquarium test kit
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...) pH down solution
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. Cellmax Bio-Organic series. Feeding as per schedule bellow on every watering.

14) How often are you watering between feedings, and how much per watering? Every 4-5 days
15) Any additives or tea's? No
16) Are your ph levels stable, or do they fluctuate? yes
17) What is your ingoing water's ph? ...your runoff ph? ingoing adjusted to around ~6.5, runoff pH ~6 (those liquid pH kits are a pita to read accurately...)
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? No but I mist a couple of times per week to clean leaves and simulate rain.

Your growroom:
19) Indoors or outdoors? Built outdoors.
20) What size of closet, room or hut? Roughly 5sqm (60sqf) but the area utilized for growing is around 2sqm (20sqf) and 3m (10ft) high
21) What are the temps and humidity levels while lights are on? ...With lights off? On 20-23C (68-73F) and 60-70% hum. Off On 17-19C (63-66F) and 60-70% hum.
22) Have you seen signs of insects in the growroom? No

Your strain:
23) What strain are you growing? Green House Seeds Hawaiian Snow - Sativa Dominant (Hawaii / Laos)
24) From seeds or clones? Feminized Seeds
25) Is this an autoflower strain? No

Does it look like over-fertilizing? Or some pest I cannot locate? Can't tell for sure since it's my first time and the looks of it do not match with any of the pics I've seen around in all troubleshooting and plant abuse threads... The plants are 1 month old and just entered their final week of vegetation. Was planning on switching the lights to 12/12 next week. For more info/history you can also check my log.

And here are the pics:
do any of your products contain seaweed extracts? i had something like that with maxicrop and had to back off. your temps are a little cool, but not your problem. humidity is high but not related as well. from your pics i noticed some red spots/bubbles that looked like eggs or something in which case im not your guy as ive never seen that. look on the undersides of your leaves for bugs as well. also the white lines in your leaves look like miners(not to be confused minors, always card those younger ones...lol.) they can be virtually invisible. unless your seeing major problems move on.
MEDEDCANNABIS Reviewed by MEDEDCANNABIS on . Last Week of Vegetation - Sudden Problem As the title says I'm in the last week of vegetation when suddenly some odd holes appeared on the leaves of three of my plants (out of nine). Some tip curling up as well. What is your experience level? first timer Your Equipment: 1) Light: 400W HPS Agro 2) Height of light: Around 10" from plant tops. 3) Type of deflector: Parabolic 4) Air Intake: Small passive intake in the door of the room plus opening for 10-30mins twice a day at least 5) Do you have an exhaust fan and a Rating: 5