Please help my Church plants are dying!!!

Here are some pics of my four Church plants that are 5 weeks veg, waiting to be cloned. I had thought they were nute burned last week so I did a reservior change and went from 1000 ppm to 700 ppm. Its been several days and they don't look much better.The undergrowth is completely shriveled and dying. Greenhouse was running this genetics at over 1200 PPM!! Could they be underfed?? Please any suggestions!!
 

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Ease way up on the feeding, and like pink said, Ideal PH in hydro is between 5.5 -5.8
sprucezeus-59621-albums-bud-shootin-picture828375-nutrient-uptake-ph.jpg
 
What are the temps and humidity like?

Temps are 69-75 and humidity is around 45. I lowered the ph to 5.7 so we shall see what happens. So you think I should lower ppm even further, there's no way they could be dying from underfeeding? Do you think that growth will recover? I was getting ready to start 12/12, should I wait? Thanks for the replies +rep!!
 
Temps are 69-75 and humidity is around 45. I lowered the ph to 5.7 so we shall see what happens. So you think I should lower ppm even further, there's no way they could be dying from underfeeding? Do you think that growth will recover? I was getting ready to start 12/12, should I wait? Thanks for the replies +rep!!
yes wait until shes stable and its my opinion to have the ppm round 900 for this time give it bout a week :leaf:
 
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