Is this iron deficiency?

[hamppusHamppa]

Hey Guys,

This is my first ever grow and I am growing a Supreme CBD Lemon OG auto. The soil mix that I am using is biobizz light mix top half and bio biz all mix on the bottom. But my plants look like it has an iron deficiency or something.
I have it in a 3 gallon smartpot under a 30w SanLight M30(I have a second for flowering). The space I am growing in is 40 x 40 x 80 cm tent, so its quite small. I keep the humidity at 55 - 65% and the temp around the plant at 66 - 74 F. I also use a soil humidity meter and have only needed to water once when it got down to 26%. The first watering before i planted the seed I used tap water that was not PH adjusted. I later took a reading and the PH is 9.3 from the tap. For the second watering I used citric acid to get the ph down to 6.5 . I am planning on putting two biotabs into the soil when the plant is around 2 weeks old. I took a ph reading of the soil it says 6.5 - 7 but its a crappy analog meter. I think I might need to test the runoff water when I water next time.

what do you think, does it look like an iron deficiency to you and can you give any advice on how to fix it.

Cheers,

Will

 

[beanja]

Looks like too much of something . How good is your tap water ? Looks like too much iron ... I would check the ppm of your tap water.

 

[beanja]

Maybe try spring water bought at store for first few weeks

 

[Big-Narstie]

What type of light is that?

If ur going to ph correct, correct it to 7ph, age water for 24 hours.. Give it nothing but water for a week or two, sparingly! Don't over water that baby. See how she goes.. Cannas trace mix is a great additive u can give them if she is lacking but looks to me her roots got abit hot.

 

[hamppusHamppa]

Thanks guys, yeah definitely too much or little of something. I am going to get an EC meter and see what the tap water is like. I just took a ph reading again and its freaking 9.8 from the tap :/ I am going to buy some spring water and see if that helps.

I might have fucked up this first grow because I poped the biotabs into the soil yesterday out of frustration. Oh well I have 4 more seeds of the same strain and 10 white widows I can screw up a few times more, haha.

Here is some info on the light. It should be great especially for smaller spaces, its only 30W but have very high PPFD-values. I have two of them, one for vegging and two for flower.


http://sanlight.info/EN/Products/Product-Details-M30

 

[TnTLabs]

like you already know, your ph is way to high.. prob K and Ca
calibrate your ph pen to make sure and then ph your next mix to 6
and yeah no food if your are in light mix at that age..
peace

 

[hamppusHamppa]

She looks much better now, the new leafs are green and the first sets are turning green again I bought a water filter that makes hard water soft and sprayed her with biotabs boomboom spray once. I also ph adjusted the water to 6.5.

 

[nickman]

Purple stems on clones...

Purple stems on clones...

O

 

[Bongstar420]

Use urea or ammonia N to get pH to go down. Citric is good and plants tolerate low pH from citric, but it degrades to neutral within days and requires constant feed. Thats a positive though because rest assured too much citric will go to neutral with no intervention in 1 week max.

Its a good idea to add micros unless they are labeled high.

Looks like youre on the rich track so far.

Hey Guys,

This is my first ever grow and I am growing a Supreme CBD Lemon OG auto. The soil mix that I am using is biobizz light mix top half and bio biz all mix on the bottom. But my plants look like it has an iron deficiency or something.
I have it in a 3 gallon smartpot under a 30w SanLight M30(I have a second for flowering). The space I am growing in is 40 x 40 x 80 cm tent, so its quite small. I keep the humidity at 55 - 65% and the temp around the plant at 66 - 74 F. I also use a soil humidity meter and have only needed to water once when it got down to 26%. The first watering before i planted the seed I used tap water that was not PH adjusted. I later took a reading and the PH is 9.3 from the tap. For the second watering I used citric acid to get the ph down to 6.5 . I am planning on putting two biotabs into the soil when the plant is around 2 weeks old. I took a ph reading of the soil it says 6.5 - 7 but its a crappy analog meter. I think I might need to test the runoff water when I water next time.

what do you think, does it look like an iron deficiency to you and can you give any advice on how to fix it.

Cheers,

Will

https://www.icmag.com/ic/attachment.php?attachmentid=400770View Image

https://www.icmag.com/ic/attachment.php?attachmentid=400771View Image

https://www.icmag.com/ic/attachment.php?attachmentid=400772View Image

 

[hamppusHamppa]

She is doing better now, I am doing a small journal here:

https://www.icmag.com/ic/showthread.php?t=337715&page=2

 

[hamppusHamppa]

Oh, and it seems that the problem with the plant was that I had the light too close to the plant. I moved it higher up and no problems after that. The yellowing and curling was from led burn and too hot air.