Re: Chemical treatment
Welcome Jeff. As a fifth year beekeeper you are already more experienced than many of "experts" here on Beesource. . The short answer is yes, there is nothing mutually exclusive about the products that treat for nosema and varroa. The more in depth answer is to first ascertain that you have a problem and then to follow the label instructions closely. MAQS can be a pretty harsh jolt to a hive when the temps are high. Nosema can be a tough diagnosis without some microscopic testing.
"Ve are too soon olt und too late schmart."- A nameless German philosopher