What will this do to my fish?

[assortedsorts]

I was turing off all my tank lights and I accidentally knocked a potted bamboo plant into the tank (plant is from a grocery store). When I picked up the plant it came out of the pot and all this white stuff came out looks like gravel, some floats and some sinks. I was told it is vermiculite :s.
I got out as much as I can, but my question is are my fish doomed?

 

[shua]

my guess is it going ro severly alter ur ph. are u doing water changes and such

 

[assortedsorts]

I actually can't do any water changes tonight but I am going to first thing in the morning.

 

[mgk]

maybe algae, probably no effect on the fish.

people have tried potting soil for planted tanks before, its not used because it has floating pieces.

 

[assortedsorts]

maybe algae, probably no effect on the fish.

It is most definitely not algae

 

[assortedsorts]

 

[shua]

do you have any bog wood in the tank? is all of that the fertilizer

 

[mgk]

It is most definitely not algae

i meant your gonna get algae from the high nutrients in the soil

 

[superleggera123]

its fertilizer..
if toxic could kill your fish..
although im not sure

 

[assortedsorts]

There was no soil in the tank...just this white stuff.
I know potting soil and this white stuff is NOT what is in soil. This is hard and crumbles when you press on it...some floats and some sinks.