Help needed - leaves going yellow / dieing.

[Bammers]

Hi Guys,

Would really appreciate it if someone could tell me what is going on with my plant - it seems to be dieing!

I have posted some pics of it in my grow log which includes all my environmental parameters / grow medium etc here:
Dinafem White Widdow XXL Auto Fem - Mars Hydro 48x3 reflector

But I will also post them here too, I think it might be a cal-mag defiecency, but would really love some insight from some seasoned growers!!

Any help would be highly appreciated! Thankyou!

 

[Antics]

What's the soil PH?
Water/Nute PH?

How often do you water?
Are you feeding nutes?

It looks like an issue with either an out of range PH, or a N, Mg, and possibly something spilled on the leaves while the lights were on.

 

[Bammers]

Thanks for the response Antics!

Soil and water pH fluctuates between 6.9-7.2 most of the time.

At present I water every 3-4 days.... Generally wait for top 2inches of media to dry out prior to watering. I am feeding 1/2 strength biobizz bio grow with each watering and added some alg-a-mic last night in an attempt to stop any cal mag issues... Hope that sheds some light on the situation.

Cheers!

 

[BuddroGreen]

To me it looks like it needs nitrogen & phosphorus.

 

[Antics]

I would try to PH your water/nutes to 6.5 when needed. But in your PH range, Nitrogen should have no problems being absorbed as this chart shows:

I agree with Buddro, Nitrogen definitely, Phosphorous maybe, but I would increase the nutes a bit, and stick with your same watering schedule, it sounds pretty solid. If a disability doesn't prevent you from doing so, just get into the habit of lifting your pots when dry/wet and you can get a good idea when to water just from lifting the pots.