RDWC - No Air Pump Questions

Keesje

Keesje

Well-Known Member
nonameguy321 said:
I realize there are a few threads about this but I have not seen any info that covers that actual construction. The idea of not hearing air pumps is a great concept as long as oxygen levels can still be maintained (which it sounds like they can).

WATERFALLS

VENTURI
Click to expand...
Another method, and probably more quiet then air pumps, waterfalls or a venturi is flooming.
Just a waterpump on the bottom of your DWC-tote that forces water upwards to the surface.
Not strong like a vulcano, but just with enough force that it will make the surface move slightly.

A common misunderstanding is thinking that a bubbler or a venturi brings DO in the water because of the tiny bubbles.
But is the agitation of the watersurface with bubblers, venturi's and waterfalls that brings DO in the water.
With flooming you have the same result, but without the noise.
Some noise you can have is the pump resonating/vibrating against the bottom of the tote, but that is also easy to prevent
 
Airwalker16

Airwalker16

Well-Known Member
Keesje said:
Another method, and probably more quiet then air pumps, waterfalls or a venturi is flooming.
Just a waterpump on the bottom of your DWC-tote that forces water upwards to the surface.
Not strong like a vulcano, but just with enough force that it will make the surface move slightly.

A common misunderstanding is thinking that a bubbler or a venturi brings DO in the water because of the tiny bubbles.
But is the agitation of the watersurface with bubblers, venturi's and waterfalls that brings DO in the water.
With flooming you have the same result, but without the noise.
Some noise you can have is the pump resonating/vibrating against the bottom of the tote, but that is also easy to prevent
Click to expand...
Well aware of how DO is introduced into the water. Flooming is, indeed, good way to oxygenate any reservoir. But the problem is that with any RDWC, you're going to have multiple (4-24) buckets/sites, and to floom efficiently on a multi site setup, you'd need a small pump in every single one.
 
Keesje

Keesje

Well-Known Member
I missed the R in the description :oops:

But then a venturi or bubblers would also not work, because you would need a venturi or bubbler in every bucket.
Or am I missing something?
 
Airwalker16

Airwalker16

Well-Known Member
Keesje said:
I missed the R in the description :oops:

But then a venturi or bubblers would also not work, because you would need a venturi or bubbler in every bucket.
Or am I missing something?
Click to expand...
Venturi is very doable. You just use 1/2" & 5/16" black vinyl tubing, which fits inside the other, cut a piece a few inches long of 5/16" and use a hole punch they sell for sprinkler line. Cut the inserted part of the drip connector on a 45* and insert it. Use a small amount of drip line to the outer exposed side just to length the intake tube. Teflon tape each side of the 5/16" hose and wriggle them in to your 1/2" line right before each bucket. Use MARINE heat shrink tubing with the ADHESIVE on the inside to seal the two together on top of using the Teflon too. You could make the whole thing at least only 3" long.
IMAG0062.jpg IMAG0065.jpg IMAG0073.jpg

These on the other hand, suck Ass and don't work for shit IMO.IMAG0059.jpg
 
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