Should I turn my powerhead off at night?

[dereks]

I have a 30 gallon with rasboras and Yoyo loaches and I put a powerhead in there to blow some CO2 around the aquarium. Should I turn the power head off at night to give the fish some rest, will it tire them out?

 

[tanker]

I would leave it on.

 

[krichardson]

It probably would not hurt to turn it off as long as something else is causing some water movement.

 

[OrionGirl]

How is it blowing CO2 around? And why?

The fish will be fine...it's not like rivers turn off at night...

 

[FreshyFresh]

I question the need for the PH at all. I would think PH circulation would stir up the surface, which you don't want lots of, or you loose CO2.

 

[dougall]

If the powerhead is only to disperse CO2 around the aquarium (and maybe ferts or whatever) then it makes no sense to run it when you're not injecting CO2 (say if it's on a timer)

But you can turn it off if you like.. the fish will be able to find a spot out of the current if needed and it's left on.

 

[dereks]

How is it blowing CO2 around? And why?

The fish will be fine...it's not like rivers turn off at night...

I question the need for the PH at all. I would think PH circulation would stir up the surface, which you don't want lots of, or you loose CO2.

It's blowing CO2 around for the plants.

Yea, I know what you mean but I wasn't sure if rasboras came from moving waters or still waters.

Will the CO2 still get to the plants without blowing it around?

 

[tanker]

CO2 does not need to be "blown" through the tank. It gets dissolved in the water.
You never need to "blow" the CO2 around.

 

[fishorama]

I agree, if there a calm area for the rasboras. The loaches like current. There shouldn't be disruptive surface movement (ie: HOB filter cascading back into the tank) but I've seen rapid surface agitation...even at Tom Barr's house!

I have a PH on my river tank 24/7 (no co2) to increase oxygenation for my hillsteam loaches...but even then, it's lower in the tank than surface level but the surface is still "roiled".

 

[dereks]

CO2 does not need to be "blown" through the tank. It gets dissolved in the water.
You never need to "blow" the CO2 around.

So just run the airline to the bottom of the tank and allow the bubbles to drift to the top? And that will be enough?