Damn. Might be early enough to take them back into veg and let them fully recover.
Also, I avoid hydro because of the lack of time I'm at home. Something you might want to consider.
As you now know, it just takes one thing to fail when your not around and it can result in months of work out the window.
Which ultimately sucks not only because you lose crop potential/yield but stress factors could cause hermies.
At least with a good quality organic grow, nutrients are released over time, which is perfect for my on the go lifestyle.
Don't lose hope though, I've seen plants recover from much worse.
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