Who said anything about a doser? I said that lights and temperature were the two big issues.
An MP10 is not enough flow for a 75g.
If the RKL shuts off the heater it won't do damage to the tank. If you set alarms on the controller it will also beep like crazy if something goes wrong.
This should be considered basic equipment. If you need 2 $15 timers, the controller will cost you an extra $70. If you set it up right in the first place, you have a better chance of keeping your livestock healthy.
Why would you tell someone not to get something for $99 that can save their tank? There's no debate or controversy over controllers. They're universally accepted as a good thing. Stop giving bad advice.
Listen or read, stop saying "stop giving bad advice." Did you disagree with aznt's first post? Loved how you nitpicked things but w/e its the internet.
He never said DO NOT get controllers, he basically said its not necessary but really thats up to her.
According to this post
http://www.manhattanreefs.com/forum/reefs-beginners/77128-anyone-have-sid-unit-rkl.html
even RKL can fail. Heaters can fail and heatup/freeze your system, but what if it blows because of the power cutoff? Oh great, it cuts off the heater, what happens in the winter when its freezing?
Since we're on the failing of sh!t issue, she should get a backup battery then as well. Do you have one?
Also, you keep mentioning stability are you talking about nitrates, ammonia, nitrites, calc, etc? Cause RKL can't fix those issues. Your main argument is with the possibility of a failed heater, that seems to be it. Then thats up to her $99 + $30-$40(heater) + tax/shipping = $150 for a timer and heater.
Again, its not blatant BAD ADVICE so cut the criticism. You may nitpick the contents of my post. I don't know you personally but you sound like a good guy, but im defending a guy, who helped me start up my tank and I have had 0 issues without buying a controller. Lets not clog her thread anymore, if you want to keep discussing send it in PMs.
Shannon, like i posted before, take the opportunity to check out local reefer's setups. Some run a simple system with 0 problems others run a complicated system with 0 problems. Goodluck