serious problem

i had a power outage and i have a hydroponic system my plants are in the 2nd week of flowering how long will it take for them to drown? the power has been out for hrs now

You need to get them out of the water asap, esp. if they are sitting in water more than 1/3 of the way up the pot. I'm not sure which system you are using so I'm reluctant to give too much advice. Hope you get your power back Quik!

your water is in resovoir ? they wont drown

invest in a UPS or small generator ASAP. i think i got my small generator (800w) for about $90.

their in a resivor

so are they good in their or not should i drain the water a bit or what i need some input

Your plants are in the res? Um if its a simple flood by pump and drain back to the res just get a pitcher and hand flood it let it drain
Back.

im thinking you are in DWC correct?? if so i have had my power out for several hours (like 8-10) at a time with no problems. i would change out the water every 12, hours at the latest, as new water has new oxygen in it. technically in dwc you dont even need the air pump but you would be changing out water constantly. or another thing you could do is lower the water level and only leave about the bottom 2" of water in your res/bucket that should work ok for a while to.

gullieson said:

i had a power outage and i have a hydroponic system my plants are in the 2nd week of flowering how long will it take for them to drown? the power has been out for hrs now

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I personally don't think anything bad will happen if you just leave them in there. I had my airstones get completely clogged and my plants didn't get oxygen to their root zone for at least 10 days. They seemed to have no ill effects... other than taking longer to mature. I think they slow down maturing when they don't get oxygen.

I say just wait it out and not worry.