the big girl does not look happy at all.So all plants bounced back and then 4 days ago I dosed 1.5ml into my 35 gal res to see how they reacted and this time my big plant (which was uneffected by the big dose may have gotten to a point of no return as my smaller plants are doing just fine (other than minor yellowing of some leaves). Now this is a way smaller dose and actually less than 1ppm total using the calculator posted by Wastei. What is going on??? What am I not doing right??
take a pic of her roots would help.