I bet it can recover, and rather quickly too

Man I hope so..ive got some time and effort into this. Happened quickly...was fine yesterday.

She's probably not dead — cannabis is tougher than people think. If the roots dried out completely for a short time (a few hours to a day), she can bounce back. If it was multiple days bone dry, it's more of a coin flip.
Here's what to do right now:
• Refill the reservoir with plain pH'd water (5.5-5.8) — no nutrients yet. Let the roots rehydrate for 6-12 hours before adding nutes. Stressed roots + full-strength nutes = more damage.
• Dim your lights or raise them — the plant can't transpire properly right now so strong light will stress it more. Give it easy conditions to recover.
• Watch for new growth in 24-48 hours — if the growing tips perk up and you see any new green, she's recovering. If everything stays limp and starts turning brown/mushy after 2 days, then she's gone.
• 4 gallons in 8 days is normal — in hydro, especially in flower or with big plants, they can drink a gallon a day easy. For next time, get a bigger reservoir or set a reminder to check water level every 2 days.
Don't give up on her yet — post an update in a day or two. And if you want to check the leaf damage, there's a free AI tool at dssgenetics.com/tools/plant-diagnosis that can analyze a photo and tell you what's salvageable vs. what's gone.

Its bouncing back..glad I didnt pull it out. Thanks for the advice.

Yeah just be a bit careful with AI advice.

Good save.

Hello Ya'll,
Very new to Hydro & have done this more than I will admit,So now I always chack the hard to get to buckets will be switching up to RDWC next go round... Awsome save!!!! Oh ya gotta check something......