"Liisa Sarakontu" wrote in message
14
"Yowie" wrote in
:

So, my question is: can I turn the thing off whilst asleep?

Don't do it. Two reasons:
1. Fish need oxygen, and as you have quite many fish in that tank,
theymight suffocate if the filter isn't running and moving water.

Fair enough - although they haven't died when we've had power outages.

2. If a filter is shut for more than 2 hours (about), the bacteria
living in the filter media start to die or try some desperate means
to survive, and when such a filter is again turned on, it might spill
poisonous stuff to aquarium unless it is rinsed clean.

The bacteria dies due to lack of oxygen?

It is some kind of hang-on filter?

Yes.

It is this one:
http://www.petshop-online.com.au/prod95.htm

Does the noise come from the
motor, or does it vibrate against the glass? If latter, you could
perhaps put something between the filter and aquarium.

The noise comes from the motor. The rattle when the flow meter is adjusted I
can only assume comes from the blades of the water pump or air cavitation in
the inflow pipe.

It is most definately not vibration against the glass as I have cushioned it
all to no avail.

Or then just throw that thing away and get a totally submersive
filter. They are normally very quiet. I have had one hang on filter,
and hated it all the time. And probably at least 10 inside power
filters, and all but one have been very trustworthy and quiet.

Liisa

Will have to check them out - thanks.

Yowie
--
If you're paddling upstream in a canoe and a wheel falls off, how many
pancakes can you fit in a doghouse? None, icecream doesn't have bones.