Ping Netmax Powercut kills Filter?

In article , 2pods
wrote:

Much snippage
Regarding a canister filter going anaerobic in 45 minutes to an hour, this
too sounds like a short time for the results being seen, but it doesn't
sound impossible either. Hopefully more of the bacteria went dormant than
actually died off, so the recovery will be quicker.
--
www.NetMax.tk

It might have been more than that, also it was very hot.
I'm now getting weird test results.
pH on the two larger tanks is down to 6.0, I was getting ammonia on the big
tank (400l) though the ammonia alarm didn't trigger (checked with household
ammonia, it's working) so could be ammonium ?

If the pH is low, you'll have proportionately more ammonium than
ammonia. The chemical test kits shouldn't be too bothered by this.
If your alarm is based on a gas-permeable membrane electrode, it
would take a higher level of NH3/NH4+ for it to trigger.

"David C. Stone" wrote in message
...
In article , Daniel Morrow
wrote:

[snip]

The only way that I am aware of to deal with power outages completely is
to
use a backup power generator, way too expensive for me right now so I
will
make do. One recommendation is to get one with a sine wave output but
this
recommendation is really only especially important if you plan on using
sensitive devices with it such as a computer. UPSs simply only help as
much
as one drop in the bucket as far as long term duration of power outages
go.
The sine wave output means the ac output is only "on" for part of the
time
and so doesn't overheat sensitive devices, very basically put. Good luck
and
later!

????

AC power implies a sine wave - that's what mains ac is, anyway.

Or are you saying that some generators actually put out something
other than a sine wave?

AC just means an alternating current. The easiest way to produce AC is to
switch high DC on and off (and level shift it down 50%, so the current
alternates) giving you a square wave. Put some heavy capacitance on that
and it becomes a sawtooth or a trapezoid (a leaning sawtooth if I remember
correctly, and I am trying to simplify my explanation). Proper generators
give you more of a gradual rise & fall characteristic of a sine wave. Some
UPS (cheaper models) will not give you a proper waveform.

The RMS power of a sawtooth is lower than a sinewave and has strong
harmonics. Some equipment doesn't like their input power so peaky.
--
www.NetMax.tk

"David C. Stone" wrote in message
...
In article , Daniel Morrow
wrote:

[snip]

The only way that I am aware of to deal with power outages completely is
to
use a backup power generator, way too expensive for me right now so I
will
make do. One recommendation is to get one with a sine wave output but
this
recommendation is really only especially important if you plan on using
sensitive devices with it such as a computer. UPSs simply only help as
much
as one drop in the bucket as far as long term duration of power outages
go.
The sine wave output means the ac output is only "on" for part of the
time
and so doesn't overheat sensitive devices, very basically put. Good luck
and
later!

????

AC power implies a sine wave - that's what mains ac is, anyway.

Or are you saying that some generators actually put out something
other than a sine wave?

Exactly, Back in the early days of personal computers there was a lot of
magazine articles/etc. about how sine wave is way better for computers than
the typical square wave because of heat generation. This was about upss and
generators. I am talking about waveforms.