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Old 04-29-2009, 09:08 PM
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Default DWC res temperatures
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Hola, my first grow failed horribly due to root rot. I found I plant that was suffering from root rot so I pulled it in hopes the funk wouldn't spread. I added hygrozyme and H2O2 to the res and after doing some more research I found that h2o2 kills FF beneficial bacteria...

All you DWC growers how do you keep your res temps below 70? I couldn't for the life of me keep the temp that low, and a few people told me that root rot occurs when the temps are above 70. The only other thing I could think would cause root rot is not enough oxygen from the air pumps, but I was using a 60 gph air pump with to outlets and 2 12" air stones so I don't think that was the problem.

Any tips are appreciated, I know some of you guys know how it feels to lose an entire crop.
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Old 04-29-2009, 09:10 PM
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either get a chiller, or a few 32 ounce frozen gatorade bottles an put them in your rez has needed peace
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Old 04-29-2009, 11:37 PM
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Damn I tried ice and it melted to fast. about 3 gatorade bottles an hour.
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Old 04-29-2009, 11:41 PM
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you gotta keep doing it untill you get your temps at like 65 degrees. or buy a chiller
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Old 05-06-2009, 09:39 PM
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eff dat I'm gonna do an ebb n flow instead
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Old 05-07-2009, 11:18 AM
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how big was ur res???
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Old 05-07-2009, 12:02 PM
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Originally Posted by dynamitejack View Post
The only other thing I could think would cause root rot is not enough oxygen from the air pumps, but I was using a 60 gph air pump with to outlets and 2 12" air stones so I don't think that was the problem.
Unfortunately, water loses it's ability to hold dissolved oxygen (or any gas for that matter) very quickly as temperatures go up. You might have plenty of air bubbling into the water, but the water is not going to hold it if it's too warm.
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Old 05-07-2009, 12:25 PM
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interesting, res usually hangs out around room temp and heat rises so I would say use reflective material on the res and keep the ambient temps lower than higher, HID light gives off a lot of heat that can stay up higher away from the res with air flow. and put the ballast above the reservoir. basically remove heat sources or divert them.
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Old 05-07-2009, 06:39 PM
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interesting, res usually hangs out around room temp and heat rises so I would say use reflective material on the res and keep the ambient temps lower than higher, HID light gives off a lot of heat that can stay up higher away from the res with air flow. and put the ballast above the reservoir. basically remove heat sources or divert them.
I had my room setup exactly how you suggested but I still got the rot!
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Old 05-11-2009, 01:17 PM
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eff dat I'm gonna do an ebb n flow instead
nah fuck that man, stick with the deep waters homie, nothing but smiles every harvest. dude you just gotta keep them temps chill, my rez stays below 55 at all times and i live in sunny southern california and use 5 hours of natural sunlight durring the 12/12 cycle and i am able to keep it low with frozen water in bottles. gotta do it man and you'll be good. maby you can use less water in your rez to keep them ice bottles lasting longer. i use minimal water and just keep that water happy and your plants are happy. best of luck
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