O.k. so I need to get a auto top off going for my tank. iI am so over toping off every day and playing with the skimmer. I was looking around at the Tunze Osmolator 3155 and it looks like a good unit.My question is dose anyone use this and are know anything about them. Also I was looking at the Tunze calcium dispenser 5074 to go with it. Would that work decent instead of a calcium reactor. I would guesse it would probility not work as good as a reactor but it seems like it would do the job. Thanks any feed back would be great. P.S. the reason for getting the dispenser instead of a reactor is my budget or lack of one rigth now.