Its all about how much you dose and how much your tank will consume.
I know several well respected people in the hobby who use or have used
regular Miracle Gro (the blue granules) directly in their planted tanks with
moderate fish loads and had no problems. I'm not saying do it - if you don't
know what you're doing you'll cause more harm than good - but it has
been done in with success.

"LeighMo" wrote in message
...
That is a BAD idea. If you do that, you will end up with dead fish, an
algae swamp, or possibly both.

Are you sure?

Several people have reported good results using the regular Jobe's, for
beautiful houseplants. They are 13-4-5. The Miracle Gro spikes are
6-12-6.
Lower in nitrogen, higher in phosphate.

I think it might be okay, as long as the spike is deeply buried in the
substrate. Personally, I find nitrate to be more a problem than
phosphate. My
tapwater has tons of phosphate in it, so I don't really need to add
phosphate,
but it doesn't seem to hurt anything. Fish don't seem bothered by it, and
it
doesn't cause algae problems.

The liquid Miracle Gro should definitely be avoided, since it's added
directly
to the water, but spikes... I think they might be worth a try. Just bury
them
deeply, and do not disturb the area for a month or more.


Leigh

http://www.fortunecity.com/lavender/halloween/881/