over fert with low ec?!?!?

so i have some silver pearl in week four of flower.

2000 watts
dehumidifier with humidity at 45
temp controle with a range of 70-75
water chiller 69.f
ph 6.0
ec .59


so no matter what i adjust my plants to they seem like they are burning. my ppm/ec wont go down either so i feel like my plants are not eating but some how being over fertilized. here are the stages of what the leafs are doing regrdless of what i try.
 

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