Aquarium controller or individual controllers?

[lastlight]

Originally Posted by GreenSpottedPuffer

There is no risk, even if the controller fails, nothing shuts off. Basically everything stays in the state it was in while the controller was working...so if it was on, it stays on, if it was off, it stays off.

That's sort of my fear. Let's say the controller turns on a dosing pump or something. It fails. You're saying the pump would continue to operate...perhaps emptying a bunch of freshwater into the tank etc.

Also...should the controller fail you have nothing while you try and replace it. Individual controllers seems to be smarter to me in that respect. They can all fail but it seems to me that if something goes on the mainboard of a all-in-one that it ceases to do anything.

Keep it coming =)