Is this nutrient toxicity

Granddaddy Purple in 8th week of flower. Have 3 plants together under same light getting same feed. this is only one doing this.
 

Jack og

JackOG
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Tip burn says it’s an issue with this plant taking in too much nutes, pistils say it’s still loading. So a bit of toxicity is there but easing back and straight water from here on maybe the best course correction .
We would like to see more pictures to define the issues, one pic isn’t gonna let us get to where it’s definitive
 
Tip burn says it’s an issue with this plant taking in too much nutes, pistils say it’s still loading. So a bit of toxicity is there but easing back and straight water from here on maybe the best course correction .
We would like to see more pictures to define the issues, one pic isn’t gonna let us get to where it’s definitive
Thanks, will take some more photos tonight. Started feeding RO water with only cal-mag added
 
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