I've been slowly adding salt for the past 2 days. I measured out all of the salt I would need and poured it into the cup i use for tank stuff, then I continue to add water to it (and dechlorinator) and wait for it to dissolve, then I add more water for each batch... I tried to work out a drip system with the fish turkey baster but have ended up just holding the turkey baster right-side up and letting it dribble out into the tank gradually. I do that about once every hour or so, depending on if I'm home or what else I'm doing. I may pull out the heater for the 15 gallon which can be adjusted and run that as well until I get a correct temperature. How often should I be doing water changes?