Battling FF Tiger Bloom's low ph for feeding throughout flowering.

Recently I've ran into a little bit of a problem. I change up soils fairly frequently so I have the opportunity to play around with all sorts of different mixes until I find what works best for my own setup, even then I'll probably still play around a bit for fun. Right now I'm using FF Happy Frog which comes naturally with a low ph of around 5.0 so I part of my mix with that includes the use of epsom dolomite lime to help neutralize the soil. I've found now that with the use of FF Tiger Bloom which also has a very low ph, that I am having issues with keeping the ph balanced. I don't want to overdo it with the epsom salts, and conveniently enough my garden store doesn't carry ph up... only ph down. I'm currently trying out a couple different things but I really wouldn't mind hearing anyone elses advice or methods for coping with similar issues.

I could post some more specific numbers and things if anyone thinks that would help out.