Dark Devil, possible Ca Deficiency?

ebcrew

Well-Known Member
I dunno its been happening to all my plants lately, different strains. i havent been able to narrow it down yet.

Im thinking either calcium deficiency or perhaps a pH lockout?

Heres some pics, if anyone could help me narrow it down i would appreciate it so much! thanks!

2015-04-21 16.57.10.jpg 2015-04-21 16.57.15.jpg 2015-04-21 16.57.23.jpg
 

ebcrew

Well-Known Member
The thing is though, i have been using calmag with all my plants. this is not an isolated case its happening to all my plants. I have a pH meter and sometimes the pH does get rather low, but it varies. I dont have any pH up/down to regulate the pH im stuck with what i have which is only baking soda, and epsom salt which i dunno if its basic or only used to magnesium
 

TheTrippyHippie

Well-Known Member
Remember too much cal/mag can cause lockout. I say just water without nutes or foliage spraying. Be sure to keep water pH in check.
 

reddan1981

Well-Known Member
invest in ph down get a silica for your ph up its ok to use tap, but let it sit for a couple days. Get a res that would last 2 weeks (less variations in nutes) stop the cal mag. Use the Epsom in small doses (it causes salt build up). Don't use cold water.
 

mr sunshine

Well-Known Member
The thing is though, i have been using calmag with all my plants. this is not an isolated case its happening to all my plants. I have a pH meter and sometimes the pH does get rather low, but it varies. I dont have any pH up/down to regulate the pH im stuck with what i have which is only baking soda, and epsom salt which i dunno if its basic or only used to magnesium
Low ph locks out calcium which can possibly lock out mag and iron stop supplementing Cal mag and keep your ph In check. This is due to ph fluctuation are your stems purple at all?
 

ebcrew

Well-Known Member
Low ph locks out calcium which can possibly lock out mag and iron stop supplementing Cal mag and keep your ph In check. This is due to ph fluctuation are your stems purple at all?
ID have to check, i think maybe the dark devil is the only plant that has purple in the stems, but i think its just part of the pheno.
 

ebcrew

Well-Known Member
invest in ph down get a silica for your ph up its ok to use tap, but let it sit for a couple days. Get a res that would last 2 weeks (less variations in nutes) stop the cal mag. Use the Epsom in small doses (it causes salt build up). Don't use cold water.
Even tho my tap water pHs at 8.0, when i add nutes and feed the plants, the runoff sometimes is surprisingly low, like around 4.5
 

mr sunshine

Well-Known Member
Even tho my tap water pHs at 8.0, when i add nutes and feed the plants, the runoff sometimes is surprisingly low, like around 4.5
Look up calcium lockout due to low ph... u already got your answer brother ph your water/nutrient solution to where it needs to be then feed them..
 
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ebcrew

Well-Known Member
Look up calcium lockout due to low ph... u already got your answer brother ph your water/nutrient solution to where it needs to be then feed them..
I really figured that was the problem, tho i have no solution. The only thing i have to get my pH up is baking soda. While it works in raising the pH i dunno how good it is for the plants. Partly because when i get the water (with nutes added) to the pH i want, 6-6.5, after i water the runoff is much lower then what i put in.

i really dont know what to do. Should i continue watering at 6.5 or should i raise it a little because the runoff is much lower?
 
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mr sunshine

Well-Known Member
Fox farm is easy dude just play with it till the pH is where you want it. .yyou do need to buy the droppers though or a pen.ph pen.
 

ebcrew

Well-Known Member
Perfect.. you don't need ph up use more big bloom.
Ok great, so should i add my water and nutes at a pH at around 7.5 because i know that the runoff will be significantly lower? or should i feed at a perfect pH and nevermind the runoff pH?
 
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