Yellowing and the Curling at the top

Hey Guys at first I thought this issue may have been a Mag Cal deficiency because I was watering with R/O water and not adding any supplements ( I know stupid). I then decided to add 1 tbsp of epsom salt to a little under a gallon of water and I watered each of my plants that was exhibiting problems. I also the third day then sprayed the leaves with standard tap water and Epsom salt mixture upon turning the lights off that night. The plant I am showing is actually just a bag seed plant but this is the second plant that is now exhibiting the same problems as the first. I now have Auto's going and they are starting to exhibit the same very very initial issues as this one and the one before and I want to diagnose this before I end up killing everything.


Lights - 2 X 400 Watt MH on 18/6 - About 1 and a half feet from plant (never had heat issues yet)
Stage - Vegging
PH of soil - 6.0-6.5 current (just tested this morning went down about three inches right by the roots to test) I used both a meter and a chemical test kit
Temperature - Between 75-80 degrees
Nutes - I was using Dr.Earth standard 3-3-3 Nutes at a very low strength and then supplementing with a tiny bit of Bat Guanamo also Dr.Earth brand to increase N level (Arriving today will be technafloras full line of nutes)
Soil - Dr. Earth Home Grown Pot-ting soil ( I am mixing this about 8 cups of soil to a half cup of perlite and a half cup of peat moss)
Current Age - this plant is about 5-6 weeks old (I feel it is quite stunted in growth really which may have to do with my nutes I am assuming)
Pot Size - 3-4 Gallon


I do have a fan going on all of my plants it osculates back and forth. I am posting a picture of the bottom leaf (the first thing that happens is the newest leaves start to yellow with a green vein - I attribute this to either a N problem or MG/Cal Deficiency) Then the top leaves start to point upwards and curl inwards - This one I have read a few things about but I still felt it was a MG/Cal deficiency but adding epsom salt has done nothing to fix the issue. I have read normally after adding epsom salt you start to see results almost immediately but atleast within a day or two.

So if someone could help me out here I would really appreciate it as I feel the auto's are starting to become stunted and I am worried I wont even get anything out of them.

Also if anyone has recommendations on using technaflora or another brand of nutes let me know I am waiting for UPS to deliver currently on the technaflora and plan to do a quarter dose on my auto's today.

(one mistake I did note i was making was watering always at the center of the plant. I have now read and understand that I need to make sure I water on the very edges of the pots I am watering into so the roots seek out the water instead of giving it straight to them)

Pictures attached.

Thanks for any help or advice Let me know if other pictures are needed will gladly get them up.



Leaf lower



(Anything I write is purely a work of fiction involving a fictional grower)

Bump any ideas? I hate to nag just almost 200 views and not one reply :/

Can't deal with the disclaimer thing.

Looks like heat stress or under watering to me. The leaves will curl up to try and catch/preserve water.

bioWheel said:

Can't deal with the disclaimer thing.

Click to expand...

I see numerous members of this board very well known members that put a disclaimer. It is purely put to be able to allow for plausible deniable argument incase of legal issues and they stumble upon a site like this or others. Obviously it doesn't get you in the clear but I have seen others even say that they are purely writing information as a work of fiction in which they are a grower. So not very uncommon just covering myself especially with posting pictures.


Also kwilli thanks for the information I do now have a thermometer in the room and it shows the maximum high the room has hit since I put the battery in. I am showing a 82 degrees so its a bit on the warm side but I will be installing a exhaust fan to create a vacuum in the tent. I guess it could possibly be under watering but I water every other day and now I am making sure that I fully saturate the soil and I am not watering until the top inch is atleast dry so not entirely sure I guess.


Thanks for taking the time to respond though hopefully a few others who have seen this may also have a guess and I can come up with a better idea. I have started to feed my auto's the Technaflora at about 1/4 strength of box so I guess that will cover any question of a Nutrient deficiency starting yesterday.
(I will change the disclaimer to read something a little less strange though)