Brown spots in flowering

[Weeder]

Hello every one!
Im kind of new here and id like to ask a few questions , i dont know if im posting in right place but ill ask anyway hoopfully ill get some answers.
Ok so im growing thc bomb auto in soil , platinum led p300, 11 liter pot and nute are - bio grow, bloom, topmax , algamic from biobizz + started to add bloombastic and calmag in last two feeding, i have brown spots that wont go, i dont know if its ph problems calmag or any other thing.

 

[AutoWonders]

A picture is worth a thousand proverbial words

 

[Heavily Medicated]

Can't tell anything without pics in natural or white light. I have an idea what it probably is, but need pics. Also, please answer these questions: https://www.autoflower.org/threads/...ill-out-first-with-the-data-that-matta.45991/

 

[Weeder]

Cant i upload photos with tor via android?

 

[Weeder]

I guess i can.

 

[Waira]

--I think you're getting some early P deficiency starting, or maybe Ca defc... Not unusual with those mild organic based nutes,.. when was the first dose of Bloombastic and Ca-Mg? Bloombastic has the PK numbers you need, depending on the concentration given, and it'll take a few days for progression of symptoms to halt,...
How far away are the lights? About 18" min. is generally recommended,... too close can stress in subtle ways, and also elevate Ca demands which are high as is during bloom,...

 

[Weeder]

Thanx for the help waira!
So first time i used calmag xtra by AN was at 9/5 in foliar feeding - 1 liter bottle 2 ml calmag and i only used half of it , next day was feeding day so i mixed - 4ml/l bio bloom, topmax and algamic (each one got 4ml/l) bio grow 1 ml/l and calmag 2ml/l. Two days later on the 12th i fed the same plus added 1 ml/l bloombastic, yesterday fed the same.

 

[Weeder]

I checked it today and it seems that the spots keep going up the plant, ill send pics.
Btw i checked the ph with sticks and the runoff was 5.5 , does it say that the soil is to acidic that the roots cant absorb ca?

 

[Weeder]

I need help please - idont know what im doing wrong , i searched , read and saw pictures of every possible problem and yet i cant tell exactly what is it. I heard that i dont need to fix soils ph because it fixes by itself so i took that problem out eventhogh last feeding i fed only with algamic from biobizz , calmag by AN and bloombastic in order not to make solution acidic, the brown spots went up the plant and i can see them even in topest leaves, some of u said its a k deficiency and the bloombastic should fix that but i cant see any changes , i've used bloombatic in 4 last feeding, should i continue using this nutes only (bloombadtic, calmag and algamic) or should i go back and use - bio grow, bloom, topmax , algamic , bloombadtic and calmag?
Tnx in advanced.

 

[blue]

Hi Weeder,

and it'll take a few days for progression of symptoms to halt,...

some of u said its a k deficiency and the bloombastic should fix that but i cant see any changes

If the symptoms are still there but not progressively getting worse, the job is done. The spots wont disappear or reverse.

Btw i checked the ph with sticks and the runoff was 5.5

To get a semi accurate Soil PH reading you'll need to know the PH that went in too. Here's an example of how to work that out:

Rough Calculation Guide by GoAuto6:

Here's some good info on ph.....
If your runoff pH is higher than your starting pH, use this equation to determine your soil pH:*
Soil pH = Runoff pH + Difference

If your runoff pH is lower than your starting pH, us this equation:
Soil pH = Runoff pH - Difference.

For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5

If your starting pH is 6.5 and your runoff is 6.0, your difference is -0.5 and using the above equation:
Soil pH = 6.0 - 0.5
Soil pH = 5.5

i've used bloombatic in 4 last feeding, should i continue using this nutes only (bloombadtic, calmag and algamic) or should i go back and use - bio grow, bloom, topmax , algamic , bloombadtic and calmag?

I'm not sure - best i leave this to someone who knows the products. (waira might!)

All the best

Blue ^_^