A newly aquired aquarium tank needed a water change every week. With our fishes dropping off like flies, we were convinced that the instant dechlorination solution wasn't as magical as it seemed. So it was back to primitive methods - to let the water sit there for some time, hoping that whatever harmful stuff in the water would disappear. But..... letting a whole pail of water sit there for a whole week had me worrying abt breeding mosquitoes, therefore I came up with this to keep the pail snugly covered.
My inspiration? Reusable salad bowl covers like this.