"Steve (Dart)" wrote in message
...
I just built a bio filter with veg on top and was wondering how long it
will
take for this bios stuff to grow in the filter?
How long until it is working at 100%?
Can the bio freeze solid or should I sink it?
snip

Hi,
Curious, is it upflow or down? Colonization has begun already and I'm not
sure what 100% working looks like. There is, for sure, a too small for the
pond size but that has many factors, i.e. number of fish, gallons, feeding
of fish, flow rate, mechanical filtration happening before the bio, etc. Big
is better.
Biofiltration stops at about 40 degrees f, that's about 4.4 c for those who
do it correctly, so letting it freeze or not requires a cleaning and a
restart in spring.
HTH -_- how
no NEWS is good