Mr E that is bizarre! I could drain my entire res for a few hours and not have my plants do that even at a young age. I know you have mentioned before, probably more than once but what kind of lighting are you using and how far away is it? They didn't get heat stress did they? If you are going to change anything i'd wait until your plants are "back on their feet" as it were. Let us know what happens!!
Weedhound Reviewed by Weedhound on . Res. change catastrophe!? ok today I drained my res. with the intention of fllushing the system for a few days with plain RO water before I switch to 12/12. I drained the system no problem, and replaced 7 out of 10 gallons while I was waiting for more containers to fill to top it off. I went and made some dinner and came back and my plants were drooping very badly, 1 dramatically bad. I tied the top up straight (gently) for now while I am topping up the res. Hard to tell yet if they're perking up with the new Rating: 5