Hi

Why bother with bottled bacteria if you already have
established aquariums or ponds? Just use some filter
media, mulm, etc from your existing setups!

If available.

I can see Bio Spira etc perhaps being useful for one's
very first aquarium.

But _many_ beginners start tanks in this way!

@ Koi-lo:

Please be so kind to tell us about your impressions using
BioSpira, thanks. At the moment it doesn't seem to be known
or available in Germany.

--
cu
Marco