im tryin to get things on hand so i can get this bait tank set up. i have heard there is an additive that can be put in tap water to make it safe for fish. true ?? if so, what is it and where to get it ?? i have a 110 gal. tank and the aerator is for 30 gal. i think. will that still keep em alive ?? im plannin on gettin a pump, filter system and pvc pipe to make a sprinkler for it to help out the aerator unless not needed. we have a drain valve on the tank so changin water wont be a prob so will a filter be necessary ??