calcium or manganese deficiency

[sekonic]

raise your feeds whats ur ppm ?

Man I couldn't tell you. That meter I have is a piece of junk. Can't calibrate it and I know it's way off. I'm going to get another one.

 

[Terry385]

DWC use ro water and cal mag 1/2 tsp per gal 200 ppm's than nutes 1/2 strength

 

[rob333]

Man I couldn't tell you. That meter I have is a piece of junk. Can't calibrate it and I know it's way off. I'm going to get another one.

oh so they still in veg or flower ? flower i think u said tell me the week of flower they are in the type of nutes u use temps lights and the ml rate u a feeding atm get back to me should be able to sort the issue also can u get me a pic of the whole plant also the top of the plant pls if u can

 

[gunnar&carey]

Everyone look at the link i posted its ph the plant i found is a dwc grow with identical issue it tripped me out too just gose to show u that u gotta do more research

 

[Cpappa27]

I'm kind of confused of what wrong with this plant. I use go flora series and pH has been 5.8 to 5.9. Was wondering if this is a calcium or manganese problem or if someone can tell me otherwise I would highly appreciate it. Also It's been on a 12 hour cycle since Dec 13. This is a dwc setup.

That looks like it could be one of two things. Main and more common one is your PH has been fluctuating and locking out certain nutrients like calcium and magnesium. The other which usually happens outdoors and Im not sure if its possible in hydro is Leaf Septoria which are a fungus that targets cannabis specifically. They both have very similar symptoms. http://www.ilovegrowingmarijuana.com/marijuana-diseases-leaf-septoria/

 

[sekonic]

Everyone look at the link i posted its ph the plant i found is a dwc grow with identical issue it tripped me out too just gose to show u that u gotta do more research

So what pH should I be at?been at 5.8 on a calibrated meter. I use the gh flora series with Kool bloom and flora nectar on week 6 fixing to to go to week 7 tonight.

 

[Terry385]

5.8 for DWC

 

[sekonic]

oh so they still in veg or flower ? flower i think u said tell me the week of flower they are in the type of nutes u use temps lights and the ml rate u a feeding atm get back to me should be able to sort the issue also can u get me a pic of the whole plant also the top of the plant pls if u can

Rob....it's been in flower since Dec 13th. I use a 600 watt light and temps are around 75 or so. Heat is not an issue for sure. Nutes I posted what I used in another reply to gunnar

 

[sekonic]

View attachment 3331068 5.8 for DWC

It had been at 5.8 or 5.9

 

[sekonic]

Ok...I just did a rez change and before I changed it the pH was 5.4. Right now I adjust the new nutrients at 5.6 using week 7 of gh flora series, Kool bloom and flora nectar. I forgot to check the temp of old rez. This is what it looks like now.

 

[Stonedvegan666]

manganese deficiency happens with high ph. Your's looks like calcium deficiency. I have been looking into nutrient defficiencies a lot since my little plant is sick and think you are on the right track. Calcium is not absobed with lower ph so I would probably raise your ph to 6.5 and see what happens. I'm lowering mine to that and hoping for the best.

 

[Stonedvegan666]

And i didn't see you were running dwc, so ignore the ph part.

 

[sekonic]

manganese deficiency happens with high ph. Your's looks like calcium deficiency. I have been looking into nutrient defficiencies a lot since my little plant is sick and think you are on the right track. Calcium is not absobed with lower ph so I would probably raise your ph to 6.5 and see what happens. I'm lowering mine to that and hoping for the best.

I raised to 6.0. seems leaves on buds are green. I have a question even though I'm using the flora series do I need to add calmag to the mix even if the micro has calcium????? Thanks