41c is fine. On my Aquaero 6 I have my loop temp set warning set to 45c and alarm set to 50c. Anything past 50c could degrade the tubing, and 60c will soften tubes.
You should set up the ambient temp for permanent use. With the ambient temp your AQ6 could control your fan curves and even your pump speed off the Delta (difference) of your ambient and your loop.
Under Virtual Temperature Sensors you would create an "Absolute temperature difference" sensor based on your Loop water temp (Sensor 1) and Ambient (Sensor 2).
Use that value to drive your fan curves. Your loop can only remove so much heat until it reaches equilibrium. Basing your fan speed on the Loop Delta allows you to maintain stable temps based on your preferred sound levels.
The AQ6 excels at this stuff. Use it.
Build: msi C8r (Carbon8r)
Core i7-9700K, MSI Z390 GAMING PRO CARBON Mobo, AMD Radeon VII GPU, Corsair Vengeance RGB 32GB DDR4-3200 RAM, Phanteks Enthoo Pro M SE ATX Case.
XSPC RayStorm Pro CPU w/b, Bykski Radeon VII GPU w/b, EKWB 140 Revo D5 Pump & Rez.
Aquacomputer Aquaero 6 LT USB Fan-Controller, Vision Touch and 'High Flow' Sensor.
(2x) Hardware Labs Black Ice Nemesis 280GTS XFLOW radiators in full push/pull with 6x Deepcool RF 140mm & 2x Prolimatech 140mm Slim Fans.