spots on leafs???

[professorkush]

There are brown spots on my leafs it's really bad on one plant, I thought it would just work it self out but now im starting to see spots on some of the others plants.
It appears similar to a calcium def.
The PH is at 5.5-5.6 with tap water + distilled (125 ppm)
nutrients grow, micro, bloom (1/2 strength 250 ppm)
any help how to correct this??

 

[spitsbuds]

heat issue with under watering s, or missed it might have een ony once were you're soil/coco ect dried with high temps that cause this and no can happen anywhere on the plant, due to other factors like hotspots from reflectors ect,
i got this once as my ac unit failed temps hit high 90, rh vanished and i miss my feeding my 6 hours(in coco during strecth) and had that damage on 1 or 2 leafs on 8 out of the 10

 

[superstoner1]

that is not heat or under watering. it appears to be a mag def, try adding calmag or epsom salts.

 

[spitsbuds]

what in middle of the plant, com on

 

[spitsbuds]

op can u post a pioc of the whole plant, just to be sure here

 

[~Dankster~420]

Your ph is 2 low bro! I've attcd you a diagram for you to look at and compare your leaves with it, & also a ph chart for soil grows & also hydro grows as well.
To me, it really looks as if you may have some "K" issues going on Potassium deficiency going on bro! That and maybe a touch of cal/mag deficiency as well.. anyways,

Hope this helps... gotta takes care of them babies! later bro..

 

[superstoner1]

your ph is not too low, 5.5-5.7 in veg is perfect. if above poster was saying a k issue, your ph is perfect for k. it is mag.

 

[professorkush]

I don't think it's heat current temps are 19 c with t5 (325watts) about 10 cm from tops.
also im growing in dwc (20-21 c) 4th week veg

dankster I just found that chart too but I have been going with what stoner said 5.5 -5.8 alot of people say they run at that ph with no problems, maybe i should up it 5.6?
stoner how much epson salt would you add per liter or would I be better off getting some cal mag

 

[superstoner1]

a couple tablespoons.

 

[Alexander Supertramp]

Being he is using distilled water, poor choice for growing, they probably are a little short on calcium and magnesium.

 

[Alexander Supertramp]

a couple tablespoons.

per liter! Way too much. 1-2 tsp. per gallon is more like it.

 

[Alexander Supertramp]

I don't think it's heat current temps are 19 c with t5 (325watts) about 10 cm from tops.
also im growing in dwc (20-21 c) 4th week veg

dankster I just found that chart too but I have been going with what stoner said 5.5 -5.8 alot of people say they run at that ph with no problems, maybe i should up it 5.6?
stoner how much epson salt would you add per liter or would I be better off getting some cal mag

I would get some CalMag...

 

[superstoner1]

per liter! Way too much. 1-2 tsp. per gallon is more like it.

i misread the l for gl. still with a diff the 2tbsp to gal is good. for maint use 1-2 tsp.

 

[Alexander Supertramp]

Whats the ppm and pH of the tap water you are mixing with? Well or city?

 

[Alexander Supertramp]

i misread the l for gl. still with a diff the 2tbsp to gal is good. for maint use 1-2 tsp.

IMO 3 teaspoons/1 Tablespoon is max per gallon. Anything more and the additional magnesium will most likely just antagonize the uptake of other elements, especially in hydro...plants that are very Mg deficient usually respond to foliar feeding of ES much better...

 

[Dobby]

Any time I see brown spots I figure it's always a good idea to take a quick peek at the opposite side of the leaf for any critters, quick and easy to rule out.

 

[UKHomeGrow]

Looks like Mag def to me.........i add 2 teaspoons of epsom salts per gallon of tap water every feed as I grow in coco.

 

[unknown1231]

PH!!! PH the water you're feeding it. PH the soil. PH a batch of nutrients (if you've been using them). Write down each PH and post it to the forum.

My recommendation is going to be to ensure the water you're feeding is around a PH of 6, then do a flush with this PH'd water. From after 2-3 days you should see an improvement. If you do not see an improvement time to get yourself some Cal/Mag

 

[professorkush]

Alexander it's city water that usually runs 200 - 250 ppm. I ordered some grow cal mag, it will probably take 2 weeks to get to me so added 2 tsp per gallon of epson salt

Any time I see brown spots I figure it's always a good idea to take a quick peek at the opposite side of the leaf for any critters, quick and easy to rule out.

didnt see any with the naked eye

PH!!! PH the water you're feeding it. PH the soil. PH a batch of nutrients (if you've been using them). Write down each PH and post it to the forum.

My recommendation is going to be to ensure the water you're feeding is around a PH of 6, then do a flush with this PH'd water. From after 2-3 days you should see an improvement. If you do not see an improvement time to get yourself some Cal/Mag

I growing in dwc totes I change the reservoir every 15 - 20 days with PH(5.5-5. nutrient water (grow, micro, bloom) 1 part tap 1 part filtered 1 part distilled before i add nutes it's about 100-150 ppm at 18-21c
when i changed my res there could have been a PH shock of maybe .2

 

[Alexander Supertramp]

You should check with your water supplier and get an analysis of what your water. Most of the time its free and always a great source of information when tuning a grow in.