Will fish sleep better with filters off?

yes they would, you might even have trouble trying to wake them up
 
I agree with everyone else in that you should never turn off your filters, day or night. Leave them running 24/7. Why, exactly, do you want to turn them off?
 
I thought that the africaaners would sleep without currents. If I could without risking to riase the level of Nitrites and amonium. I could provide a better sleepoing environrments.

I am also planning to get a 200 g tank. I do not chrish taking it upstairs. Doenstairs in need to go into my bedroom and i do cherish my own sleep without the filter noise. I am a very light sleeper. :)

Dose anyone knows how long the bacteria can survive without a flow (food)?
 
They start to die as soon as their oxygen supply runs out...It isn't as much about food as it is about their need for oxygen. I'm guessing that the bacteria begin to die within an hour or two's time inside a canister filter...with most aerobic bacteria dead in 12-24hrs...of course, I'm just speculating. Hard to say without actual testing.
 
My filter is dead-silent except for the trickling noise from the output. Or so I thought. A couple days ago I put my ear up to the glass and to my amazement the tank was humming! Do the fish sense this 'noise'? Does it bother them? I guess they would get used to this.... but i had no idea it was so loud in there! I feel sorry for them now. :(
 
Silent filters

For the 200 gallon tank, invest in an Eheim filter, or 2. I have the 2126, it is totally silent. At 6 pm one of the lights in my planted tank goes off, and with it the fan goes off. The tank is totally silent then -- so peaceful.

I do believe in double filtration, especially for large tanks.


I have read that the bacteria will begin to die off within the first hour of filter flow ceasing. I know that when moving a filter, one ought to lay the filter media in shallow tank water, just covering the media, to keep the oxygen up. And when power is out, one ought to open the canister to get air to the media. It really is important.

You have to remember, the filter bacteria are living creatures in your tank.
 
For the big tank, get Eheim filters (a 2229 wet/dry and a 2028 canister would do the trick, unless the tank is heavily stocked); they are silent.

I'd question the basic premise that launched this thread: that fish need zero current to be able to sleep well. I wonder what the basis is for that assumption...

Jim
 
Whoa, Good point!

Oh yeah, good point!

Current and filtration are two different things. You cannnot shut down the filtration, but you might need to adjust the current.

If the current is too fast, the filter can be slowed, or simply adjusted to have a larger diameter output. Like the nozzle on a garden hose, if the outet is enlarged, the jet stream becomes a gentle gurgle. On a filter that can be done by drilling out the spraybar holes, or adding more, or removing the spray bar and adding a larger diameter hose. Or maybe just divert the flow to a wall or something to absorb some of the force.

I'm in the midst of that right now myself. The new filter is rather large for the tank, and the ouput is pretty strong. I hate to drill out the spraybar (freakin expensive Pro II) and the elbow I bought is the wrong size :( so for now I've just adjusted the flow toward the wall a bit more and turned the filter down a tiny bit. the front corner is still brisk, and the fish seem to love that. But, in my tank the back of the tank is very calm and nice for resting.
 
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