FX5 oxygen???

  • We are currently upgrading MFK. thanks! -neo
knicks791;4161016; said:
Does the fx5 produce enough oxygen for fish, or should there be another air supply?

depends on the scenario.

i.e.

stock, tank size, temperature.. etc etc

Your question is incredibly vague.
 
From what I have read it is all dependent on the agitation at the surface. Like stated above. That is where the exchange takes place. I have a 405 fluval on a 75....I just keep the water level low enough so the water breaks at the surface. I have had no problems. I'm sure things like temp....stock will play a part. I think a power head to break the surface on the other side of the tank is a good idea.
 
knicks791;4161016; said:
Does the fx5 produce enough oxygen for fish, or should there be another air supply?
Actually;
No canister filter produces oxygen...
The dissolved oxygen in the water, that fish gills extract, comes from the water being exposed to the atmosphere.
The smaller the water particles are, the more surface area it has, that can make contact.

So when you break the surface of the water in the tank, you are allowing more water to come into contact with the air that's right at the surface.

A common misconception about air pumps and air stones is that they are responsible for adding air to the water...although there might be a little air absorbed that way, it is the bubbles that cause an up current and that means more water is changing at the surface and that means more surface area is exposed to the air.

So if you need more dissolved oxygen in the water, just aim the outlets toward the surface or mount them above the water and let the flow break the surface of the water...
 
Circulation + surface agitation oxygenation...

Oxygen enters the water at the water/air interface... if the water is stagnent the surface tension will increase greatly reducing the potential for an oxygen exchange...

Circulation moves the oxygenated water from the surface and moves it throughout the tank.
 
Deaths Sting;4161199; said:
depends on the scenario.

i.e.

stock, tank size, temperature.. etc etc

Your question is incredibly vague.

Have to agree with this man. What you have asked is "how long is a piece of string". Depends on the tank size, stocking levels, water temperature, type of fish (some use way more O2 than others e.g. barbs), is the Fx5 outlet disturbing the water surface (usually a good idea to increase o2 absorbtion).

You need to go through these factors.
 
nc_nutcase;4161416; said:
Circulation + surface agitation oxygenation...

Oxygen enters the water at the water/air interface... if the water is stagnent the surface tension will increase greatly reducing the potential for an oxygen exchange...

Circulation moves the oxygenated water from the surface and moves it throughout the tank.

Yes. The absolute basic physics of it are simple. The surface area of water is GREATLY increased when the surface undergoes turbulance via a power head or filter exhaust; therefore gas exchange occurs much more efficiently, and more O2 enters your water.

DONE.:headbang2
 
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