seedlings need help

cobragro

Member
When plants were 9 days old I gave them nutes. They started showing burn signs and changed to filtered pH 5.8 water. They looked great then a week later the ends of the larger leaves looked like they had a brownish yellow dust on them but no dust just that color. Now top leaves have yellow stripes and bottom leaves are dying on the ends. Please help!
 
9 days old does not need fertilizer. I am growing in a decent potting soil and just gave first feed (Weak) at day 21. To much water and nutrients will hurt small plants.
 
Computer dead using phone, don't think I can cut and paste. Growing in hydroton accelerated technologies Stanley and Brian combo. Temps are 72-80, adding co2, small fan in box.
 
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