Entry 2: I have always ran a dosing setup, as opposed to a reactor, regardless of tank size. I just prefer dosing. I like that this setup is all one piece. The optional float switches are a nice touch too, and at $20.95 its not an expensive add-on. I've seen other dosing setups charge an arm and a leg for float switches, which i never understood since I can get one on amazon or eBay for like $3-4 a piece. Also, the lids look large enough to actually get a hand in there. I purchases some small individual dosing containers from Amazon, which work perfectly fine and have the float switch capability, however the opening is so small I'd need a child sized hand to get in there and install a switch! Devils in the details and it looks like Simplicity thought about these things.