The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
It all just depends on how sturdy the bin is. In the past. I used a 2x4 "girdle" around some of the tanks I've made to make sure the sides were sturdy enough. In most of the pools I used, they were for growing out fish so I just had multiple sponge filters in the pools and did weekly water changes so that there was no buildup of anything bad. If the bin is large enough, you can even plumb it with a pool filter or water pump to make the water flow better. Lot's of possibilities.