First time grower : Is it Overwatering or a deficiency ?

[rockerbosit]

First time grower..I am currently in the third week of flowering. It is an autoflower ( Watermelon Candy Strain). The pot is a 6L pot. Temp is 22-26 deg celcius and RH is 50%-65%.

I watered it everyday (1L). I used nitrogen fertilizer in the veg state and then from the first week of te flowering, introduced P and K rich fertilizers gradually. But then I started noticing these yellowing with brown spots tho days ago. Since then, I stopped watering

Could this be overwatering? If yes, is there any way to reverse it?

Or is this a CalMag deficiency?

 

[Jonesfamily7715]

First time grower..I am currently in the third week of flowering. It is an autoflower ( Watermelon Candy Strain). The pot is a 6L pot. Temp is 22-26 deg celcius and RH is 50%-65%.

I watered it everyday (1L). I used nitrogen fertilizer in the veg state and then from the first week of te flowering, introduced P and K rich fertilizers gradually. But then I started noticing these yellowing with brown spots tho days ago. Since then, I stopped watering

Could this be overwatering? If yes, is there any way to reverse it?

Or is this a CalMag deficiency?

Looks more like a defficency, over watering makes your leaves droopy af. Try adding a lil cal mag, which nutes are you using? The yellowing with brown spots ain't gonna clear up 100% but it will look better. Your plant looks better than my first grow. The leafs are still quite erect and buds forming nicely. You might try defoliating some of the lowers to get more out of your tops. This one is definitely salvagable, I would recommend maxibloom & maxigrow as it's very simple to feed, I switched from maxi series to greenleaf megacrop 2 part and it's working quite well, but i think maxibloom was better. I dont do the autos personally from potency issues I the past, photoperiod might be more beneficial for the learning period.

 

[Hollatchaboy]

Did the fading start at the top or bottom?

 

[MickFoster]

What is your medium?

 

[rockerbosit]

Did the fading start at the top or bottom?

from the top. The bottom leaves look OK so far..

 

[rockerbosit]

What is your medium?

Soil. General soil for growing indoor plants.

 

[2WorldsFrog]

adjusting ph of water?
some nutrients that might already be in the medium will be hard for the plant to use if the ph gets out of range.
just putting it out there that the spots on those leaves won't heal. it looks like you have plenty of growth to support the plant so i would get rid of those couple leaves and look for improvement on growth in other areas as it gets corrected.
whatever happens, see it through.
i had one do this a while back, couldn't get it figured out, pruned twice throughout flower. rust spots kept coming back but never got to the buds. yield suffered a bit but still smoked well.

 

[rockerbosit]

Try adding a lil cal mag, which nutes are you using?

During the Veg state,mostly I used Nitrogen rich liquid fertilisers with water. Now,after blooming started, I started adding PK-13

 

[Hollatchaboy]

from the top. The bottom leaves look OK so far..

Likely a magnesium deficiency then. The question becomes though, why?

 

[conor c]

Any chance you could have nute lock/ph imbalance therefore you got deficiencies showing regardless what you feed it ? I mean your in a 8 litre pot that's pretty small i imagine it be a easy thing to do with a smaller pot so far on also just noticed that this a auto also that won't help they hate to be in smaller pots as well there better off started in a big pot from the very start Vs transplanting them n potting up like most do with photoperiod plants

 

[Phytoplankton]

A liter of water a day in a 6l pot is excessive. I’m sure you’ve washed out a lot of your nutrients unless you feed every day. Whatever the problem, it’s a non mobile nutrient, since it’s starting at the top. Most likely Ca, possibly S, or Fe too. Definitely could be ph related.