safe range of calmag

Prawn Connery said:

ph?

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i try to run right around 6.0

Ok What Type Of Water You Using ?

well water, on the harder side. 0.2 EC out of the spigot

same water ive beenusing for 20 years, didnt really have any issues before switching from GH to Jacks

CobKits said:

well water, on the harder side. 0.2 EC out of the spigot

same water ive beenusing for 20 years, didnt really have any issues before switching from GH to Jacks

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Well You can Send Your Well Water To Jacks Or I Believe Theirs A Company In San Diego Called Scientific Research That Will Analyze Your Well Water And Mix Your Nutrients Accordingly.

I Use Jacks Professional At A Rate Of 1/2 Teaspoon Of Each And I Add 2mL Of Extreme Gardening Mag Amp To My R/O Water

that or i could just use the water out of my dehuey.

Whens The Last Time You Had Your Well Water Analyzed? If Its Been A While It Might Be A Good Idea To Check It Out And Compare It To Your Last Check.

Hi there in Veg you want around 120-90ppm total of ca the same amount the first two weeks of introducing to flower and 100-70 ca in flower

Good luck

100-100-200-100-50
N-P-K-Ca-Mg
http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm

https://scienceinhydroponics.com/2016/03/the-first-free-hydroponic-nutrient-calculator-program-o.html

First of all, make sure your ph pen is calibrated and accurate.

Cobby, Are you using the well water on other containers/ houseplants without any recent issues? Well/ municipal can fluctuate, but not drastically unless a severe weather event(hurricane/etc).

You said it's just the colder runs that are showing defs, warmer is fine ? , adding more cal/ mag will not solve the issues then.... Raising temps will

Good luck