
Her ignorance was your gain though!

As for dropping the ph safely,I don't know much about dropping it-I'm always trying to raise mine for the snails!

I do know that in my Angel fish tank,I keep Driftwood in there for the Pleco's and that takes my ph from around 7 to about 6.6-6.8,and it's not even a huge piece of driftwood.You may want to consider using a few pieces to take the ph down naturally. I have two Angel's right now.The one keeps laying eggs ,and I'm not even sure that I have a true pair because my Pleco's eat them before I can see if they hatch

For Tropical's your filter's sound fine in my opinion-Of course how heavy you stock the tank,may matter.Good luck and keep us posted.