I just purchased my first bonsai tree recently and i have a question about the fertilizer.
The guy i bought it from stuck a bottle of fertilizer into the soil, i think it was called Green Pia.

How long do I keep the bottle of fertilizer in there?

It's been almost two days and the fertilizer in the bottle has barely gone down. Is this normal?
He also gave me a brief list of instructions for taking care of it, and in there it just says to use one bottle every one or two months.

Thanks!