well judging by the pics and info you gave, that is what i see happening. a little more info would help diagnose the problem. i have over used pyrethrum sprays and the only thing i have ever seen happen is yellow spots will occur where the plants get burned, by the moisture and lights, not the pyrethrum. i only saw one plant that had what i am describing and it was on the back right on like the second pic. the rest is not what you have signs of
so let me elaborate.
the first pic in that thread looks like your mother correct?
i see a few leaves curling down pretty bad which suggests to me either overwatering or overfeeding or both. also the tips of your leaves have burns which is the first sign of being right on the edge of overfeeding. also clawing leaves can be a sign of ph problems.
a perfectly healthy plant fed an improper balance of nutrients and incorrect ph can start to claw within 15 minutes, and can show signs of some forms of problems and burns within a day or so.
the reason i think it is ph is because i see a few different signs of deficiencys such as zinc, and calcium, which is most likely caused by an unbalanced ph.
now the spray may have clogged up your plants "lungs" which caused these problems to show more quickly but i dont think just a pyrethrum spray would do that kind of damage.
have you measured the run off for ph and ppms?
when had you fed last?
what do you feed?
did you spray with the lights on or off?
is there fans or ventalation?
more info will help peeps diagnose your problem better, and help you get your plants happy again
FLo
also are the babies seedlings or clones?
seedlings are much more fragile and clones taken from unhealthy mothers will exhibit the same characteristics, and show signs of deficiencies and problems much faster because they do not have a root mass to uptake nutes, and are using the nutes stored.
