okay...sounds about right. (been there myself).
So while the auto-top off is a good idea...topping off once a day isn't bad enough to cause too much stress (unless it's a nano! hahaha).
But the temp swings ARE enough to cause MAJOR stress. Especially HIGH temp swings like that.
You can decide on whatever treatment you wish, as I don't want to come accross as forcing my opinion on that matter. But I do personally, feel stress reduction, garlic and a slightly increased diet is the BEST treatment for ick.
But all that aside, you DO need to get on top of fixing the temp swings asap. Adding fans over the sump to reduce temp (this WILL increase evap though...so keep an eye on that). Looking into a chiller (I know they're expensive...but depending on where you live and temps there...they can be a REQUIREMENT). lighting schedule changes can help with Temp too. I know you want to see the tank...but switching to lights on in the evening can help temperature problems significantly.
All in all, do whatever you decide with the Ick problem...but I'd focus more on the temp for now. Otherwise, you're gonna have a LOT of fish with Ick, and some other problems that are worse.
hope that helps.
And keep asking questions!!!
