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cork144
heh mate, no reason to get it scientific, just the effects on your plants, thats all a grower needs to understand.
Aeroponic PC case scrog
- Thread starter Aerohead
- Start date
DoctorChronic
New member
thanks for your help man im gonna get workin on it this week cant wait!
disfunktional
Member
i understand that the bigger your sump the biiger the air pump needed, but how do you figure the correct size? sorry if this seems like a simple question.
W
WTA
I have been thinking of this for a while. I've asked many people in the salt water aquarium trade the question; Why do acrylic lids warp?
Somewhere I saw a chart for air pump watts per gallon of the res but I can't find it now. It was just a baseline anyway, Lots of grows I see don't pump enough air in there. This is why people think that there isn't much dissolved O2 in a res in the 80F range. Even with the sump at 85F there is plenty of O2 holding capability but you need to blast air into it.
Just put as much air in there as you can reasonably afford and make work. I wouldn't use less than 7 watts even for a micro setup.
disfunktional
Member
thank you for all the information very helpful man!!
DoctorChronic
New member
does a whisper 10 seem like it would work for a reservoir of your size attatched to 4 bubble wands?
Yes a Whisper 10 is a very nice air pump for a micro grow, that's what I used on my last run.
I tried to upload a pic update but it keeps saying upload failed!! LOL I'll try later..........
Hey Aero, do you have any other tips like that? A while back, freezerboy made a thread and it was going to detail how to grow a dwc plant with very hot res temps. From memory I think they were hotter than 85 temps even. From what I could work out, he was thinking maybe the fact that the air pump was intaking hot air inside the cab, this could have been the contributing factor to making it work, crazy as it sounds. Then I believe the weather cooled up and so I never saw it again. Do you have any thoughts on this, or other ways to make a dwc work in high temps? I've seen mention of hydrogen peroxide, would that help?
DoctorChronic
New member
man thats really helpin my bill out! hopefully i can get it together in the next week to show you guys
Yes, I do have some tricks for maintaining a hot res. We all know it's better to have cooler res temps but you can manage to pull off a grow with 80-90f res temps if you have to. People tend to assume that if a res gets over 75f (23.8C), it will hold little oxygen but that's not true, you can get plenty of dissolved O2 in a warmer res. It's more likely to get some bad bacteria, mold, slime algea, ect, this is partly caused by less O2 in the res but mostly by light leaks and contaminents.
Some helpful things in a warm res are:
--No light leaks to the res at all including covering net pot media with foil.
--H2O2 (hydrogen peroxide) added to the res water. 5ml per gallon 35% H2O2 not the 3% you get at drug stores.
--No additives (keep the nutes basic) Avoid nutes that are heavy and cloud the res water.
--Blast the crap out of the res with air, I mean overkill with bubbles (they heat the water less than power heads)
--Frequent water changes.
If I missed anything feel free to post.
Here is a chart that shows plenty of dissolved O2 even at 90F (32C)
Look at the difference between 23C and 32C, not that much really.
Now for an update on the flowering, they are ready for a tuck under the screen today.
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cork144
very little light getting under the screen now, nicely filled
Huggie bear
Active member
Yes, I do have some tricks for maintaining a hot res. We all know it's better to have cooler res temps but you can manage to pull off a grow with 80-90f res temps if you have to. People tend to assume that if a res gets over 75f (23.8C), it will hold little oxygen but that's not true, you can get plenty of dissolved O2 in a warmer res. It's more likely to get some bad bacteria, mold, slime algea, ect, this is partly caused by less O2 in the res but mostly by light leaks and contaminents.
Some helpful things in a warm res are:
--No light leaks to the res at all including covering net pot media with foil.
--H2O2 (hydrogen peroxide) added to the res water. 5ml per gallon 35% H2O2 not the 3% you get at drug stores.
--No additives (keep the nutes basic) Avoid nutes that are heavy and cloud the res water.
--Blast the crap out of the res with air, I mean overkill with bubbles (they heat the water less than power heads)
--Frequent water changes.
If I missed anything feel free to post.
Here is a chart that shows plenty of dissolved O2 even at 90F (32C)
Look at the difference between 23C and 32C, not that much really.
Now for an update on the flowering, they are ready for a tuck under the screen today.
Totally agree and again I relate this to my tropical fish obsession yet again but.
We often time run them up around 80 and only depend on breaking surface tension either with water flow or air injection to keep our critters happy.
Does higher res temps cause root stress or are we only worried about oxygenation of the res water in this fear?
On the pic on the left is that a split I see or is that wound from super cropping?
Thanks Aero, looking great man. 
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cork144
scrub, i think higher res temps can cause root slime also, dont take my word for it, im a soil grower
stonedu
Member
You can buy a kill-o-watt for around $30-$40 to measure power and you could get one of those cheap-o analog light meter's from home depot or your local equivalent for like $10, but not sure it would be accurate enough for you. You could also pickup one of those photography light meters, I've seen cheap ones for $30-$40. Good luck, I'd like to see the results.
I was looking at those the other day, I think I'll pick one up pretty soon, like to see what these lights pull out of the wall...
I gave the ladies another tuck under the screen, it's getting confusing, have to plan like 4-5 moves ahead to fill the screen evenly. Right now I'm hoping I didn't flower too late, the screen is packed, getting pretty dense in there and they are growing rapidly.
Here is a current pic:
Still looking brilliant aero, hopefully vegging later will just mean a bigger weight at the other end, though i think those buds are gonna get mighty close to those bulbs.
Just seen the link for the wine fridge medi-cab gonna go check it out, I hope it'll be another good show!
Just seen the link for the wine fridge medi-cab gonna go check it out, I hope it'll be another good show!
