I went to the Hive Discord and asked about "Blacklisting" posts from certain tribes "Actifit" for me to clean up my following feed. After a few people started talking about it no surprise 
Under PeakD Settings there is an option to "Hide posts with specific tags" so I added actifit to it.
The process is the exact same as adding tags in posts just type the name hit enter or space and then save at the bottom or on the side bar.
This is probably one of my shortest posts ever, but I think it solves a problem many people want to figure out. Sorry to Actifit for calling them out specifically but it is my opinion.