First time grower problems during flowering help please

[enoughskunk]

-Problem: Yellowing dying leaves, some of them bottom, some of them mid
-Medium/grow method: Plagron Light Mix
-Feed and supplements used: TanG Autoflower schedule - AN Sensi Bloom AB 2ml/l Overdrive 1ml/l Carboload 1ml/l Calmag 1ml/l
-Water source: Filtered tap water
-Strain and age: Blue Mystic Auto - Day 54 - Northern Lights Auto Day 35
-Climate: Around 30 degrees during the day, 16 in the night
- Light used: Outdoor
-Additional info: There are some ants, bees and other couple of insects but doesnt seem to be coming my girls, they like the other plants i grow like rosemary etc.

Hello guys, this is my very first grow, I grow in my terrace, they get 8 hours sunlight in a day. Some of the fan leaves of mystic has become yellow and died, sugar leaves seems very healthy. Northern Lights is younger and only gets fed with sensi bloom, it only has problem in the very bottom leaves, additionally it has some orange-red spots. Is this deficiency, or a nute burn? Thank you very much for your help.
Blue Mystic:


Northern Lights

 

[derek420colorado]

it is not getting N for some reason. I think it might be a salt build up thing. I would flush your plants with 3X the volume the container they are in with plain water. Then re feed with your normal schedule. Possibly try and up your N if you can just a little.

 

[enoughskunk]

it is not getting N for some reason. I think it might be a salt build up thing. I would flush your plants with 3X the volume the container they are in with plain water. Then re feed with your normal schedule. Possibly try and up your N if you can just a little.

Thanks for the reply, I never checked its PH. Can it be a nute lockout because that?

 

[derek420colorado]

Thanks for the reply, I never checked its PH. Can it be a nute lockout because that?

Well AN is pH perfect so I don’t think so that’s why I think it may be a salt build up. Maybe @Waira can weigh in

 

[Mañ'O'Green]

AN PH perfect is misleading. You really need to know what the PH is in the root zone. Get a good soil probe, an Accurate 8 or clone or a Blue Lab soil probe. You should also have a good PH pen and EC Pen. Do not buy cheap ones they simply do not work.

You state you are using tap water, what is the starting PPMs? AN needs to be under 50 PPMs and in fact are recommending <10 PPMs now! Do you know if you have chloramines in your municipal water?

16°C night is too low shoot for 20°C. Growth will slow and stop if temps get that cold.

 

[enoughskunk]

AN PH perfect is misleading. You really need to know what the PH is in the root zone. Get a good soil probe, an Accurate 8 or clone or a Blue Lab soil probe. You should also have a good PH pen and EC Pen. Do not buy cheap ones they simply do not work.

You state you are using tap water, what is the starting PPMs? AN needs to be under 50 PPMs and in fact are recommending <10 PPMs now! Do you know if you have chloramines in your municipal water?

16°C night is too low shoot for 20°C. Growth will slow and stop if temps get that cold.

I checked the lab results from 2 months ago. PH is 7.6, PPM is 31, and chloramine is 0.5mg/L. Will move them in during the nights to get them warmer. I will try to get some ph and ec results soon. What do you recommend me to do for now? Because it might take a week until I buy those equipments you recommended. Should I flush it with store bought low ph water and ramp up the base nutes? I started to get worried about the plants. Thanks for the reply.

 

[Mañ'O'Green]

Chloramines Removal

You are looking for ascorbic acid - vitamin C. The store brand is usually the cheapest without other stuff added in. 50mg per gallon will treat water with 3.8 PPM of chloramines.

There is some debate as to how important this is in a soil (peat) grow to remove this but I recommend doing so.

 

[enoughskunk]

AN PH perfect is misleading. You really need to know what the PH is in the root zone. Get a good soil probe, an Accurate 8 or clone or a Blue Lab soil probe. You should also have a good PH pen and EC Pen. Do not buy cheap ones they simply do not work.

You state you are using tap water, what is the starting PPMs? AN needs to be under 50 PPMs and in fact are recommending <10 PPMs now! Do you know if you have chloramines in your municipal water?

16°C night is too low shoot for 20°C. Growth will slow and stop if temps get that cold.

What if I cut the calmag? I was just using because I had it in had. I have never seen calmag deficiency. About the overdrive, I was just following TanG's schedule. Since my plants are growing slower compared to his, I might have started it earlier than ıts needed without realizing. Also, giving that amount of water with base nutes is not gonna burn the plants? I am a new grower, thanks for your help. Teşekkürler.