I've never had a Corvette Stingray ZR1 supercharged so it's hard for me to give good advice.....I drive a Camaro....get it?
I agree with you that pH is the problem in your system. You can leave the filters alone since it is processing so well for you. Just need to find another way to lower pH.
Kids have the best ideas cuz they think outside the box. They don't know about rules. Henlei will be a great asset to the Team.
Sorry to rush off but I'm off to do my pond maintenance route. Guys, please chime in.