waterproofing...

[kimmercake.livejournal.com]

i'm am totally non-educated in the way of waterproof sealers.

my project for the afternoon is to repot an ivy plant i have and i want to paint my own container but waterproof it so that when i water it the pot and bottom container won't get destroyed.

so my request is some info on anything and everything you guys know about waterproofing something, especially over acrylic paint.

and also, where i could find said sealer.

theres a hardware store nearby, would that be a good place to look?

THANK YOU!