LSD 25 Auto in DWC brown spot on leaves

[Kostasvg123]

Hello all,
I currently grow an LSD 25 Auto in the Aero Plantit DWC system with a reservoir of about 12.5 lt. I am into the second week of growing phase and noticed these brown spots on the first pair of leaves. The light I use is the 144 Marshydro Reflector, the temperature ranges from 23 to 26 max celcius, and the humidity never goes below 55% with top 60 - 63%, the ph due to the DWC, fluctuates from 6.3 when i correct it to 7.2 max. I use the Advanced Nutrients feeding schedule at half strenght (1.2 ml per lt for the base and half for the other) and I add 4 ml in the whole reservoir of Adv.Nutrient. Cal Mag for the first couple weeks

. Any help will be appreciated, thnx a lot.

 

[namvet25]

Hello all,
I currently grow an LSD 25 Auto in the Aero Plantit DWC system with a reservoir of about 12.5 lt. I am into the second week of growing phase and noticed these brown spots on the first pair of leaves. The light I use is the 144 Marshydro Reflector, the temperature ranges from 23 to 26 max celcius, and the humidity never goes below 55% with top 60 - 63%, the ph due to the DWC, fluctuates from 6.3 when i correct it to 7.2 max. I use the Advanced Nutrients feeding schedule at half strenght (1.2 ml per lt for the base and half for the other) and I add 4 ml in the whole reservoir of Adv.Nutrient. Cal Mag for the first couple weeksView attachment 873941 View attachment 873940 View attachment 873942 View attachment 873943 . Any help will be appreciated, thnx a lot.

Nothing to worry about,i can barely see it but if it continues, post back.

 

[Kostasvg123]

Nothing to worry about,i can barely see it but if it continues, post back.

Thnx man

 

[Free Flow]

Watch your ph, 6.3 and 7.2 are way too high try keeping it from 5.6 - 6.1

 

[Kostasvg123]

okay i lowered the ph to about 5,9 and in the aftenoon after job i ll check it again. I also added 2 ml of Adv. Nutr. Cal mag in the tank and 1 ml today in the morning. The two first leaves are affected much and it seems like a cal mag def. Here are some photos of this morning.

 

[Rev. Green Genes]

The spots will not go away, and may dry up more. But as long as no new spots show up, your good. You caught this very early.

 

[Waira]

.... you're getting P lockout when pH is that high,... what's your water source? it sounds like the AN "self-buffering" nutes are getting overwhelmed,... That's a pretty small res' too, and will be prone to sudden swings in pH, EC and all that stuff because of the small volume,....

 

[Kostasvg123]

Good morning, the water i use is tap water, and its very good, the ph is much more stable as the days pass, the range of it is between 5.9 to 6.4 max, i check it 3 times a day and correct it with ph down. Here are and some today morning photos. I added cal mag and i think that its much better now. Forgot to mention, checked the roots and everything is great, white and healthy. There is some minor colour due to b52 of AN but everything looks great. Thnx a lot guys for the assistance.