I went ahead an ran an airline outside. PH jumped .2
My neighbor gave me an odd look as he watched me drill a hole into the side of my house
Sorry took a while to get online. First day off in a couple of weeks. Studying thermodynamics, electrical circuits and working. So I had to catch up on my tank and chores around the house. This size scrubber you made out of the bottle is for a 10-15 gallon tank. You need a much larger scrubber for a 90 gallon. Kinda like putting a Nuvo nano skimmer on your tank and hoping it will handle a tank that size. You'll need at least two larger bottles (RO canisters would work best). Perhaps two soda bottles would work better. Put them in parallel is the key. Your have a decent size skimmer that pulls a lot of air. Which is why the media exhausted so fast. Like slurping up a soda through a straw from a shot glass(Gone in seconds). You need a big gulp.
Anyway glad to hear the hole drilling has helped. GL.