Micro bubbles?

[Balz3352]

I haven't even attempted to read that thread. But do basement sumps with long runs pose a problem for fish. If so why. Or is the long run and pressure just a problem if you are trying micro bubbles. Sorry for my stupidity in advance.

Im trying to understand it myself but from what I can gather there is higher pressure from the pipes long runs amd stronger pumps. This puts more concentrated air into the water column. Fish breathe in more concentrated air and essentially get the bends (sp) from to muxh nitrogen. I think?

 

[Andrew_bram]

Oh great because my runs are extremely long

 

[Balz3352]

Oh great because my runs are extremely long

Me too. Im going total of 15 ish up and about 12 laterally

 

[rjl45]

With the long run on your returns, I would definitely research before trying and probably run the math. I am thinking that the pressure is highest at the pump, and then decreases with elevation. So you may have 10psi at the pump and then 1psi at the outlet. The nitrogen would be compressed at the pump and then start to release as the pressure diminishes. The question is, how long does it take for the nitrogen to release, too avoid supersaturating your DT? I don't know... Has anyone made "dive tables" for tanks? jk, but I think the same concept from scuba diving might apply here.

 

[Andrew_bram]

Uh 15 vertical and 60 horizontal

 

[Andrew_bram]

Is it only if you are running bubbles or does the run and pressure with out bubbles cause a problem.

 

[JuanGutz]

Here's the guy that described it the best to me.

 

[JuanGutz]

Trying to figure out how to get pictures sorry bare with me

 

[JuanGutz]

And here's some equations he gives.

 

[JuanGutz]

Hope that helps some.

 

[TheRealChrisBrown]

I thought it was only causing a problem when introducing the bubbles before the return pump in the sump. When I first started a basement sump I had horrible problems with cavitation, I would worry about that with the fine bubbles building up over time. Maybe I read it wrong though. If I were to attempt the bubbles I think I would put the airstone in my display in front of a pump..in my case the gyre. Again, maybe that is ineffective though...

 

[JuanGutz]

I thought it was only causing a problem when introducing the bubbles before the return pump in the sump. When I first started a basement sump I had horrible problems with cavitation, I would worry about that with the fine bubbles building up over time. Maybe I read it wrong though. If I were to attempt the bubbles I think I would put the airstone in my display in front of a pump..in my case the gyre. Again, maybe that is ineffective though...

If you can get the bubbles to circulate like a return does I don't see why it wouldn't work? But I would have to say based off that thread not to many people had success with that.

 

[rjl45]

Is it only if you are running bubbles or does the run and pressure with out bubbles cause a problem.

I think it is only a problem if you have bubbles under pressure in the long run of pipe.

If you can get the bubbles to circulate like a return does I don't see why it wouldn't work? But I would have to say based off that thread not to many people had success with that.

If I remember, most of the people in the R2R thread were trying to use their return pump to "chop" up the micro bubbles to make them smaller and closer to the nano size.

 

[projectx]

From what I have read, the airstone needs to be close enough to the intake of return pump to suck in the super fine bubbles, but far enough away to let the larger bubbles float away. The bubbles in the DT need to be so fine that they dont float to the surface, but sort of hang in suspension. They have referred to it as looking like a fog and not a smoke screen.

The smaller bubbles get sucked into the return pump and get chopped up even finer