Help... cold water stress???

Someone please help... my girls are slowly dieing!!! Just changed over to flower and I did a water change. Instead of using my stored water (65) I used my well water(55 temp) and I believe I stressed them. It's been four days and they haven't recovered.
They want to sleep, and when I turn the lights on they start to droop after a few hours. Any suggestions...IMG_2170.jpeg
 
sorry, it looks like over watering, but your growing hydro, so there in water all the time. hows the ph? i can't see water temps causing the droop after 4 days
 
Change the water.
Check all your numbers twice on the water you're putting in.
Check your environment.

They've grown to the point they're at just fine so one of your inputs must've glitched.
 
A lot of replies thank you...
I never used this well water before.
Air pumps are good.
Ph was high the day after the water change.
Ph 6
Temp 78-80/ humidity 50
Water temp 68
Roots look ok, no slime or smell but they're sure not thriving!!
 
I've changed the water. Checked and rechecked all numbers. The only thing that was changed was the different source of water and the temp. Besides all the stress... light change, defoliated, flower nutrients.
 
My guess is that the well water has something in it that the plants don't enjoy.
If you used glue at your connections something could be leeching into the water also.
Finding a good water filtering system might help your situation.
I've never used EC meters much, but they can be useful to check water quality.
 
Dump the res and go back to tap water. As well, get a water heater to warm the res to 82, run an air stone + wavemaker too. You can't grow hydro with a good res
 
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