Soil ph info needed!

27ºC in what humidity levels?? My guess is that u have very low VPD which makes leaves transpire too much and end up looking like that...

Moisture stress for a prolonged time can also lead to nutrient lockout and nutrient build up in the soil since the leaves are taking up water too fast and leaving nutrients behind... This can also cause nutrient lockout.

Just my 2cent from my limited experience.. Hope that helped...

Also, the leaves look like phosphorus or calcium deficiency.. How old is the plant? Many 'hot' mix soils run out of calcium after 4/5 weeks... Especially if your tapwater is "soft" or if you'r using RO water..

kodak91 said:

Also, the leaves look like phosphorus or calcium deficiency.. How old is the plant? Many 'hot' mix soils run out of calcium after 4/5 weeks... Especially if your tapwater is "soft" or if you'r using RO water..

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Hey kodak. Im using RO with a touch of tap to buffer salts at 150ppm.

20 days in flower plus 4 weeks of grow that plant.

Im trying to understand the soil.

Is it soilless and should continue ph 6 watering?

Is it soil and should water 6.3 - 6.5?

If i should treat it as soil, then phos locks out under 6.3 and it means i locked it out along with calcium.

If phos is locked out then why other plants not showing these symptoms?

Other plants showing dark fan leaves and slight tip pointing down which makes me believe i have little bit of nitro overload.

Cant figure out if i should give to this plant more plain buffered ro water ph to 6.5 OR add some mega crop back to the root zone.

What is it? Is it def is it tox or is it nutrient lockout cause of ph

kodak91 said:

27ºC in what humidity levels?? My guess is that u have very low VPD which makes leafs transpire too much and end up looking like that...

Moisture stress for a prolonged time can also lead to nutrient lockout and nutrient build up in the soil since the leaves are taking up water too fast and leaving nutrients behind... This can also cause nutrient lockout.

Just my 2cent from my limited experience.. Hope that helped...

Click to expand...

I cant control humid much. I am in the 50s to 60s%

savvas said:

I cant control humid much. I am in the 50s to 60s%

Click to expand...

Hmm ok. 50/60 is good.

For organic soil ph at 6.5, but im not familiar with what soil u are using... Dunno if RO water is necessary , its probably causing calcium deficiency.. but dont quote me on that. Wait for more experienced users to give some feedback.

Did you measure the runoff ?

kodak91 said:

Hmm ok. 50/60 is good.

For organic soil ph at 6.5, but im not familiar with what soil u are using... Dunno if RO water is necessary , its probably causing calcium deficiency.. but dont quote me on that. Wait for more experienced users to give some feedback.

Did you measure the runoff ?

Click to expand...

I did mention character of the soil above comments. It says it black peat base with added chemical ferts and it has 80% organic contect.

BUT I HAVE NO IDEA what the heck this means. I read somewhere that its soiless and i used it for a year with ph 6. From veg to harvest using the same ph 6 and it worked on some plants but on some other i has problems. I also got airy bud plants and a lot of other problems so i feel something not right either with my ph or with excess nutrients feeding. Trying to underdtand. I need help

I measure run off from 2 plants and its 1000 and 1300 ppm on the .500scale of hanna. The water going in was 250ppm

Didnt took the ph reading unfortunately

Guys, my soil run off is at 5.4 ph. Watered with ph 6.5

i notice fan leaves stems beginning to turn purpleish

What to do?