Hi @garry5,
Sorry to hear about your worries. Please see this thread for a deeper and clearer explanation from @john.tavis about this - Hbv dna undetectable after using meds - #4 by john.tavis
You are doing the right thing with regard to your Hep B and on the path to better health. If you continue to have higher ALTs, then other causes might be worth exploring with your doctor (who can physically examine you and do additional tests)
Cheers,
Thomas