You want to get into a qualifications contest to decide a scientific point? I’m game, but I think we’d be better off using science, and will do so later.
I have a double major BA from Cornell in Biology and Chemistry. I have a PhD in physical chemistry from Harvard. I have been a highly successful industrial chemist for 40 years, including being the co-inventor of several FDA approved pharmaceuticals that have sold billions of dollars worth of drug worldwide. I have received national awards from the American Chemical Society and other organizations.
As a hobby, I have been focusing on seawater and reef aquarium chemistry for decades, answering hundreds of thousands of questions on Compuserve fishnet, reefs.org, reef central, and reef2reef. In three of those, I was an official expert moderator. I was a MASNA aquarist of the year.
I have spent considerable time experimentally studying aluminum in seawater. I published a detailed article on it. I will post it so you can read it. Since the results did not sit well with Seachem when I showed aluminum can come from their aluminum oxide product, they had a chemist (not sure if he was a hired gun or an employee) come on and we publicly debated extensively. I ran additional experiments at their request. They still showed aluminum release. At one point the CEO (Gregory Morin) agreed that the experiments were convincing.
In the course of the work for the paper and the follow up with Seachem, I ran many icp experiments for aluminum with my own hands in a machine we had at my professional job. Many different samples from different experiments were run, including those filtered with sub micron syringe filters to remove larger particulates.
The rationale from dissolving aluminum oxide into seawater is detailed in this linked aluminum article of mine.
https://reefs.com/magazine/chemistry-and-the-aquarium-aluminum-in-the-reef-aquarium/