While.some versions can be a plague, the brightly colored ones are less aggressive.
Also a Catch 22.
You have leathers so you will want to run carbon.
For whatever reason, fancy cloves seem to hate carbon. [emoji53]
Zero flow and low light also help.
The orange and green centered cloves grew and spread and migrated to where they wanted to be in our tank, and then melted away within a few weeks of running carbon (GAC). [emoji17]