Pond Boss Magazine
https://www.pondboss.com/images/userfiles/image/20130301193901_6_150by50orangewhyshouldsubscribejpeg.jpg
Advertisment
Newest Members
BarbraIss, rallenhughes, Tn_slab_crappie, Superguy1, MaplePond173
17283 Registered Users
Forum Statistics
Forums36
Topics38,938
Posts528,796
Members17,284
Most Online3,583
Jan 15th, 2020
Top Posters
esshup 25,430
ewest 20,624
Cecil Baird1 20,043
Bill Cody 13,753
Who's Online Now
10 members (anthropic, tlh2865, Pat Williamson, jpsdad, Steve_, Errfoil, Retired on 40, RUMBLON, liquidsquid, HTNFSH2), 299 guests, and 424 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Aeration and Destratification
#536270 06/08/21 04:22 PM
Joined: Oct 2019
Posts: 379
Likes: 16
Steve_ Online Content OP
OP Online Content
Joined: Oct 2019
Posts: 379
Likes: 16
I was listening to one of Bob Lusk's Facebook Live videos today where he was talking about aeration (I think it was an older video). He mentioned something that was probably minor and well-known to most people, but I wasn't aware of the fact that the tiny bubbles created by your aeration system aren't what adds oxygen to your water, its the pushing of the water in an upward motion, where destratification occurs, and where water can mix with oxygen at the surface. Wow. [Insert Mind Blown Image Here]

So I got to thinking... if the majority of oxygenation takes place on the surface, and if you want to mix as much water with the surface as possible, isn't your typical bottom diffuser a super-inefficient way of doing that? I'd think that paddle wheels or even fountains would mix way more water than the bubbles given off from a diffuser.

And I got to thinking again... wouldn't normal fish movements also stir up the water? Probably minor, of course, but depending on the size of your fish, I could see a lot of surface agitation/aeration coming from normal feeding habits and/or swimming.

Now I'm picturing a 50-ft tall inflatable Bob Lusk, sitting in a pond with a giant spoon, stirring it up. laugh

Re: Aeration and Destratification
Steve_ #536272 06/08/21 05:29 PM
Joined: Jun 2016
Posts: 2,172
Likes: 54
Offline
Joined: Jun 2016
Posts: 2,172
Likes: 54
It's not so much the agitation of the bubbles, but more the fact that you are exposing non-oxygenated water to the air/water interface (surface of the water) where it freely picks up the oxygen. The diffuser is merely a pump that moves lower water up to the surface where it can be exposed to the air. According to the Vertex lift chart...a single 9" diffuser (at 10 foot deep) can move 1600 gallons per MINUTE. That's pretty efficient considering it is being done with fraction of a horsepower.


Fish on!,
Noel
Re: Aeration and Destratification
Quarter Acre #536273 06/08/21 05:46 PM
Joined: Oct 2019
Posts: 379
Likes: 16
Steve_ Online Content OP
OP Online Content
Joined: Oct 2019
Posts: 379
Likes: 16
Originally Posted by Quarter Acre
It's not so much the agitation of the bubbles, but more the fact that you are exposing non-oxygenated water to the air/water interface (surface of the water) where it freely picks up the oxygen. The diffuser is merely a pump that moves lower water up to the surface where it can be exposed to the air. According to the Vertex lift chart...a single 9" diffuser (at 10 foot deep) can move 1600 gallons per MINUTE. That's pretty efficient considering it is being done with fraction of a horsepower.

Yeah, that's what I was saying. Its not the bubbles that are adding oxygen to the water, like I originally thought, its the upward motion the bubble stream creates to get water to the surface where it can pick up oxygen. 1600 GPM seems like a lot, though. I wonder how they're able to calculate that, because any motion whatsoever in water creates a ripple effect. If I throw a rock into a pond, that will cause the entire pond to "move". Maybe I'm just overthinking it lol.

Re: Aeration and Destratification
Steve_ #536277 06/08/21 07:44 PM
Joined: Apr 2002
Posts: 3,205
Likes: 8
Editor, Pond Boss Magazine
Lunker
Offline
Editor, Pond Boss Magazine
Lunker
Joined: Apr 2002
Posts: 3,205
Likes: 8
A key part of this equation is moving bottom water to the top. Ponds stratify. Bottom water has no chance to absorb oxygen or relieve itself of gases as they build in that cold layer. Diffused aeration provides vertical movement of water, where a rock thrown into a pond only offers horizontal movement of what that interfaces with the atmosphere anyway. That's the biggest difference.

I'd love to see that big spoon.


Teach a man to grow fish...
He can teach to catch fish...
1 member likes this: Steve_
Re: Aeration and Destratification
Bob Lusk #536279 06/08/21 08:31 PM
Joined: Oct 2019
Posts: 379
Likes: 16
Steve_ Online Content OP
OP Online Content
Joined: Oct 2019
Posts: 379
Likes: 16
Originally Posted by Bob Lusk
A key part of this equation is moving bottom water to the top.

Yeah, and it's strange that the best way we've come up with is using a stream of tiny bubbles to move the water. You'd think you might be able to get better water movement with just a direct pump, pumping water vertically from bottom to top, no bubbles.

Quote
I'd love to see that big spoon.

I'm working on it.

Re: Aeration and Destratification
Steve_ #536281 06/08/21 09:56 PM
Joined: Jan 2009
Posts: 25,430
Likes: 109
Moderator
Ambassador
Field Correspondent
Lunker
Offline
Moderator
Ambassador
Field Correspondent
Lunker
Joined: Jan 2009
Posts: 25,430
Likes: 109
Originally Posted by Steve_
Originally Posted by Bob Lusk
A key part of this equation is moving bottom water to the top.

Yeah, and it's strange that the best way we've come up with is using a stream of tiny bubbles to move the water. You'd think you might be able to get better water movement with just a direct pump, pumping water vertically from bottom to top, no bubbles.

Quote
I'd love to see that big spoon.

I'm working on it.


Steve:

Energy wise it is cheaper to move the water to the surface with the bubbles than to pump it. A LOT cheaper.


www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).
Re: Aeration and Destratification
esshup #536332 06/09/21 04:12 PM
Joined: Oct 2019
Posts: 379
Likes: 16
Steve_ Online Content OP
OP Online Content
Joined: Oct 2019
Posts: 379
Likes: 16
Originally Posted by esshup
Steve:

Energy wise it is cheaper to move the water to the surface with the bubbles than to pump it. A LOT cheaper.

Yeah, I was kinda thinking that. Water has a lot of resistance, and anyone that's ever used a row boat can attest to that. I can imagine the energy consumption if you tried to rig up some sort of underwater paddlewheel. I guess tiny bubbles it is.

Re: Aeration and Destratification
Steve_ #536340 06/09/21 07:30 PM
Joined: Jan 2009
Posts: 25,430
Likes: 109
Moderator
Ambassador
Field Correspondent
Lunker
Offline
Moderator
Ambassador
Field Correspondent
Lunker
Joined: Jan 2009
Posts: 25,430
Likes: 109
Originally Posted by Steve_
Originally Posted by esshup
Steve:

Energy wise it is cheaper to move the water to the surface with the bubbles than to pump it. A LOT cheaper.

Yeah, I was kinda thinking that. Water has a lot of resistance, and anyone that's ever used a row boat can attest to that. I can imagine the energy consumption if you tried to rig up some sort of underwater paddlewheel. I guess tiny bubbles it is.

Don Ho agrees too!


www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).
1 member likes this: Steve_

Link Copied to Clipboard
Today's Birthdays
benji havens
Recent Posts
Pushed shrubs into pond
by anthropic - 06/21/21 06:13 PM
What did you do at your pond today?
by Steve_ - 06/21/21 04:07 PM
Bass Seem a bit Skinny
by Steve_ - 06/21/21 04:03 PM
Help with forage base!
by JChanse - 06/21/21 01:24 PM
Drain and Bulldoze, or Excavate?
by Theo Gallus - 06/21/21 01:08 PM
how to fertilize bermuda grass at ponds edge
by Flame - 06/21/21 01:01 PM
help only other option is electrofishing
by ewest - 06/21/21 09:15 AM
Plant ID?
by Theo Gallus - 06/21/21 08:06 AM
Aeration setup
by markey - 06/21/21 07:46 AM
Been along time.. Feeder Question
by Dave Davidson1 - 06/21/21 07:10 AM
Thoughts on a new 2.7 acre pond stocking
by jpsdad - 06/21/21 06:51 AM
Tiny crappie pond, need advice
by Missionshooter - 06/20/21 08:51 PM
Newly Uploaded Images
RES vs PS
RES vs PS
by crimsondave, June 4
Gravid?
Gravid?
by Shorty, May 28
Blue on Black
Blue on Black
by Shorty, May 27
Syphon System
Syphon System
by Deancutler, May 19
Fungus on Bluegill
Fungus on Bluegill
by Hunter_59, May 7

� 2014 POND BOSS INC. all rights reserved USA and Worldwide

Powered by UBB.threads™ PHP Forum Software 7.7.4