DIY chiller idea

[Eyford01]

Alrighty my bubble is nice and big so who feels like bursting it? the plan is to set up a 15g cold water tank, I'll be heading to the coast mid febuary to collect the critters to make my own livingroom tide pool, all I'm missing right now is the cold part and I'm pretty cheap so here's my idea:

tank->countertop water cooler->canister filter->return to tank

if I plumb in the water cooler I figure the line can go in the top of the jug and have the out line attached to the dispenser for the cold water, this will serve to both add a sump and chiller in one and may still be small enough to hide under/beside the stand