Matt,
I echo Wes' advice of a water change and lights off. Did you do a water change after using the Red Slime Remover? Products like Red Slime Remover will remove the
cyano but to solve the problem you have to address the underlying cause.
Can you tell us what your tank parameters numbers are? What is your water source? How much flow do you have in your tank? What is your lighting and how long are you running them? Is it possible that with the change of seasons your tank is being hit by sunlight?
