I wasn't refering to the glass tanks them selfs but rather, just the 2 month mark of how long they have been running...
GHA 2 months in IS quite normal... The system is balancing itself... it will only be ugly for a few months....
If this was a Mature system, then I would recommend more action... Vodka dosing is done by several members here, and to good affect, though I personally would discourage you to jumping to that right away, just stick with your normal water changes and let your tank cycle. It's going to change alot in the next 6-8 months...
Steve is right, make sure you use RO/DI, and don't over feed, but don't stop feeding just cause of the GHA 2 months in.