"Bruce Rich" wrote ...

about his product BZT.

I have used a product marketed at gardeners as "Garden Yoghurt" . It's
basically a mixture of various bacteria you growth like yoghurt in a heated
maker and then use on soil, ponds, even work surfaces, to remove/replace
harmful bacteria. In a pond it makes any detritus clump up, does the same in
the filters too, so everything stays much cleaner, the water stays clearer,
and the fish seem healthier. I've also noticed a significant increase in
fresh water sponges on surfaces in the pond/filters which is always a sign
of good quality water. A cup full dose lasts a season or more as it
continues to grow in the pond to it's optimum level. Quite cheep to make
too, especially when it was a present in the first place.

--
Regards
Bob Hobden
W.of London. UK