get rid of the dimmer switch , its not worth the hassle of constantly adjusting it.
I had the dimmer switch setup for a while but found it very time consuming to keep adjusting it since the ambient temp of the room fluctuates too much.

I ended up spending more in the end since I had to buy a ranco anyway.

they do the job if you don't have any choice , or if you're waiting for one to be delivered. But I wouldn't use one long term.