A well-meaning but uninformed craigslister cleaned a 29 gallon aquarium he gave to me with chemical cleaners before I got there. I need to reseal it anyway (got it for free because it leaks) but will massive amounts of rinsing get rid of the leftover cleaning agent?

I'd like to house a lot of plants, some small fish, and maybe even a tree frog in this thing eventually so it needs to be safe.