Data Domain & DPA 19.1 Reporting for storage use

I am new to DPA and Data Domain and need to create reports that will show what our current Data Domain usage is by backup, a change rate for each backup, and future growth planning. 

I have our Data Domains  (6300 & 2500) connected but I have tinkered with the reports and I know some of the incrementals are more than 1GB. Most of the backups (last night time frame) show 0 for data when our Networker 19.1 show there data being backed up. 

Thank you for any help.