There are a ton of aquarium supply ads in Wallaceburg. It might be good to check out kijiji ads in Wallaceburg for pick up while you are there. Could get some good deals and maybe find something you are looking for.
http://chatham-kent.kijiji.ca/c-pets-accessories-20-10-Gallon-Fish-Tanks-More-W0QQAdIdZ523745078
http://chatham-kent.kijiji.ca/c-pets-accessories-20-10-Gallon-Fish-Tanks-More-W0QQAdIdZ523745078