Btw adding the incorrect amount of dolomite lime will throw your soil’s PH off. CL
Not disagreeing my friend, just saying since he's got a bottle of CaMg, that's the solutionSo you’re saying that you don’t use epsom or know any other growers who do? CL
I’m not disagreeing either and I think you’re right about the solution if it’s not a lockout from so much epsom. CL
I’m not disagreeing either and I think you’re right about the solution if it’s not a lockout from so much epsom. CL
The shorter plant on the left is the one with the issues. Brief summary: This grow kinda went wrong. I got 10 Mint Chocolate OG crossed with Gorilla Glue seeds. (Not so good genetics apparently) Sprouted 10, kept 9 showing female, gave 5 to a friend and 3 of those immediately turned hermi, my 4 looked good, put 2 into flower and was going to keep 1 other for clones, suddenly one of the in flower went hermi as did one of the mothers. Long story short, I started flowering the (supposed to be) mother that’s why she’s so short. So shorty started showing signs of low mag so I started the Epsom salt. The brownish spots started to go away but then the mature leaves started getting a little curly and crispy so that led me to think nutrient block. The bigger original flowering plant is doing great.
I’m not an expert by any stretch of the imagination but from what I’ve learned it sounds like a lockout from using so much epsom. Good luck n happy growing. CLThe shorter plant on the left is the one with the issues. Brief summary: This grow kinda went wrong. I got 10 Mint Chocolate OG crossed with Gorilla Glue seeds. (Not so good genetics apparently) Sprouted 10, kept 9 showing female, gave 5 to a friend and 3 of those immediately turned hermi, my 4 looked good, put 2 into flower and was going to keep 1 other for clones, suddenly one of the in flower went hermi as did one of the mothers. Long story short, I started flowering the (supposed to be) mother that’s why she’s so short. So shorty started showing signs of low mag so I started the Epsom salt. The brownish spots started to go away but then the mature leaves started getting a little curly and crispy so that led me to think nutrient block. The bigger original flowering plant is doing great.
My bad they're not overwatered.The shorter plant on the left is the one with the issues. Brief summary: This grow kinda went wrong. I got 10 Mint Chocolate OG crossed with Gorilla Glue seeds. (Not so good genetics apparently) Sprouted 10, kept 9 showing female, gave 5 to a friend and 3 of those immediately turned hermi, my 4 looked good, put 2 into flower and was going to keep 1 other for clones, suddenly one of the in flower went hermi as did one of the mothers. Long story short, I started flowering the (supposed to be) mother that’s why she’s so short. So shorty started showing signs of low mag so I started the Epsom salt. The brownish spots started to go away but then the mature leaves started getting a little curly and crispy so that led me to think nutrient block. The bigger original flowering plant is doing great.
Different question related tois it ok to flush with (city) tap water or should you use RO?
It's not adviceable to feed only tap water in coir or hempy. Without any buffer in the solution you will cause pH fluctuations.
We are just a bunch of "know it all" arrogant assholes..lol..Thanks everyone, I think I’ve got a game plan. I’ll let you know how it turns out in a week or so.
In the future maybe if you posted pictures first it would stopThanks everyone, I think I’ve got a game plan. I’ll let you know how it turns out in a week or so.
all the confusion @Grow AZ. Just a suggestion. Happy growing. CL 
Yeah as I was writing that long post with the photos I thought “I probably should have made this the OP”In the future maybe if you posted pictures first it would stop
. Should note that I grow Autos, not sure if Photos would require a higher PPM value. Happy growing and good luck. 
Nice, and I agree with you other then the Epsom salt my friend unless you are in organic soil (subcool) but he does not need anymore Mg. Let's take that off the table and only use something controllable which would be cal/mag.. exactly your sig pic..lol..@Grow AZ your original question asking if one should use RO or tap and should add Cal-Mag to yer flushing for a Cal Mag deficiency, I can not answer that question never have flushed a plant. When I have a plant that looks ill I will water that plant with PHed Spring Water with no additives to run off fer bout 7/10 days . I see what appears to be excessive nitrogen,clawed leaf tips, dark green waxy appearance, which could lockout Cal-mag, giving more CM will not fix the problem with a lockout.
I use Epsom Salts and water soluble Gypsum with my RO water as a Cal-Mag substitute . .30 grams of Gypsum/ .30 grams Magnesium added to my water to give me approximately 80/100 PPM. I use this mix fer regular watering without Nutrients. Fer feeding with Nutrients I Double the amount of Gypsum/magnesium to raise the PPM to 180/200. My understanding is Cal-Mag is necessary fer nutrient uptake, not necessary to use without nutrients. Regarding salt build up , my cloth pots look new after a harvest using this method. I shelved my liquid Cal-Mag months ago
@GainesvilleGreen you start off stating that plant does not need any more Magnesium, then you recommend 3/4 dose of Cal-Mag,
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