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?

I used pot scrubbies and cut up election signs (Canadian). The corrugated
plastic makes good medium with good water flow and surface area. All crammed
into a 5 gal (imp) plastic flower pot. If I had a digicam I would have a
pic.
thanks