Reel McKoi wrote:

"Hal" wrote in message

It does sound suspiciously like it might contain the same stuff as a
numbered soluble fertilizer like 15-30-15, that I find at Walmart. I
don't know where these chemicals come from, or if they are in
combination with potassium but my understanding is they are simply
nitrates, phosphates and potassium.

Some come with trace elements. I'm experimenting with Miracle-Grow and
products like it right now. It's not toxic to fish that I can see. The
5-10-5 for gardens works well in the water I grow pond plants in. It
doesn't seem to bother the frogs but has no trace elements listed on the
bags. I think I'll add MG next time and see if there's a difference.

How can something that contains ammonia not be toxic to fish??? Ack.
Even tiny amounts of ammonia in the water can stress fish and affect
their health and growth, whether or not you see an immediate toxic effect.

--Altum

--
My other fish and pond forum is:
http://groups.google.com/group/The-Freshwater-Aquarium
Did you read the FAQ? http://faq.thekrib.com