Filter question

wnersg

New Fish
Oct 22, 2002
3
0
0
#1
Is it advisable for one to switch off the filter at night? I heard that once the filter is off, the bacteria inside the filter will die off. Is that true?
 

Oct 22, 2002
341
0
16
Silver Spring, MD
#2
yes, from what i understand and it also fouls the water in the filter (think about it all that poop and gunk in the filter just sitting there all night) and when u turn it on in the mornin ur putting that water back into the tank

another thing is that there's no water circulation during the night if u turn it off, unless u got another filter running
 

R

ronrca

Guest
#3
Well, no. Bacteria will not die off immediatly. Bacteria will actually live for quite a few hours (Im not exactly sure how long but 10-12 hours rings a bell). After that stage the bacteria will go into a dormant stage and start floating around looking for food. Once food has been found, it will go active again until food is gone and the process continues. Bacteria will die when it has been dormant for a number of days (again, unsure how long). That is why 'bacteria in a bottle' doesnt work.

It is not recommended to turn off the filter at night anyways. Like aznpanther mentioned, there's no water circulation and no bio filtering either.
 

wnersg

New Fish
Oct 22, 2002
3
0
0
#6
Oh, it's because my filter is creating quite a current in the tank. And since the fishes are constantly swimming in the current, so I thought that switching the filter off may give them a break and a good nite rest.
 

colesea

Superstar Fish
Oct 22, 2002
1,612
0
0
NY USA
#7
If the current in your tank is too strong, try breaking it up with some floating plastic plants, and placing lots of obsticals in the path of the current. I've a Penguine 330 on a 20 gallon high, and it does pump out a strong current in a barren tank, so what I've done is at the point where the current is turned downwards by the glass and starts rebounding, I've made a wall of green plants (I use fake plastic, I'm sure the current might rip some live ones) and along the bottom I've stacked up lots of rocks and caves.

This "wall" is more in the middle of my tank, not totally against the back glass where most people stack their decorations. A lot of the plants are tall as well, so their tips break into the waterfall as well, further reducing the current. I've been able to create slow moving zones in my two back corners by placing large decorations katty-corner in them (some replica tree stumps and driftwood) so that behind them are calm areas.

The fish seem fine. Usually fish will adapt to a stronger current by putting on more muscle mass the way a human doing heavy lifting "bulks up." They adapt. They would also require extra food for the exertion.  But if you break the current up with lots and lots of strategically placed decor, most of the fish will find a quiet area to rest when they don't feel like playing in the faster moving water. Non-toxic food coloring can help you determine where the water is flowing exactly.

I turn my airpumps of at night. I find the humm slightly annoying. I think the fish like having the bubbles off too, since they seem to crowd less when the pump is off.
~~Colesea