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browntrout
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Fix your PH dude. Don't let that "Buffer PH" value on your soil analysis fool you.
So with a soil PH of 5, this entire conversation seems a little like a guy telling his mechanic he knows the gas tank is full of water, but keeps asking what else could be causing problems with air conditioning or cornering performance... or towing capacity...
I'm no pro. In fact I'm an idiot and nobody should ever take my advice (or anyone on the internet for that matter). But, I do know that correcting everything that is known to be incorrect, is pretty much the first step in solving any problem. Applied here, that means I personally would ignore these symptoms until they remain even when all known issues are corrected. In this case, the plant growing in soil that has a PH of 5, is well, it's a known issue.
Calcitic Lime is used more for PH change vs Dolomite.
whoa whoa whoa gents, so lets start here OP @browntrout
1. these gurls are in flower correct?
2. What makes you think there is an issue with the plants health? is it the purple?
Cause it doesnt look like PM or mold to me.
Did we overlook genetics???? thats why I asked in number 1 what strain are we dealing with.
Give me the pedigree of said strain and lets go from there. Also be more specific as to why you think this is an issue. Not what you heard on other forums. Cause if you relying on other forums that tells me your green . Again whats the issue?? :D
So the beginning pics you posted were not yet in flower? Still veg shotz?
mhhhhhhhOne is starting in the first set of pics, different plants. I was stating that this issue arose before flowering started on any plant except one.
like scuba said whats the differential between lights on and off tempstemps
Calcitic vs Dolomitic Limestone in Growing Media | PRO …
www.pthorticulture.com/.../calcitic-vs-dolomitic-limestone
Calcitic limestone dissolves faster than dolomitic limestone so it quickly adjusts a growing medium's pH within one week, but it has a shorter residual effect of up to 1-2 months. Dolomitic limestone is a combination of calcium carbonate and magnesium carbonate and serves two purposes in the growing medium.
The two most common forms of limestone incorporated into growing media are calcitic and dolomitic limestone:
Promix uses both Calcitic, and Dolomite.
- Calcitic limestone is calcium carbonate and it neutralizes acids in the growing medium. It provides some calcium, but almost no magnesium. Calcitic limestone dissolves faster than dolomitic limestone so it quickly adjusts a growing medium's pH within one week, but it has a shorter residual effect of up to 1-2 months.
- Dolomitic limestone is a combination of calcium carbonate and magnesium carbonate and serves two purposes in the growing medium. Primarily, it neutralizes acids in the growing medium but also provides some additional magnesium and calcium for plant uptake. Dolomitic limestone dissolves slowly in the growing medium, resulting in longer term pH adjustment (up to 2-4 months) and buffering to improve pH stability.
I use Promix BX. That's also where I got the idea to use both, then researched it.
Together, dolomitic and calcitic limestone create a more even and consistent growing medium pH.
When using both forms of limestone, better pH control can be achieved; calcitic limestone quickly releases and adjusts the growing medium's pH while dolomitic limestone slowly releases over the course of the crop, resulting in limited pH fluctuations during production.
They are best used in a 2/3 x 1/3 combination.
and molybdenum deficiencies are very rare. 30 + years never had that.PH does not affect molybdenum only if your ph is under 5.5. but you would be showing a hell of lot more problems than just MO at that point. you would be running more deficiencies
I'm the only person on the forums to get this strain of purple kush to turn purple. cold watering temps and cold nights. looks exactly like yours.
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