There are two kinds of true, and thus two kinds of ‘real’. There’s the kind where what you believe matters and the kind where it doesn’t. Gravity is the second kind. Step off the top of a building and it doesn’t matter if you believe in gravity, you’re going to fall. Politics is the first kind. If everyone believes I’m the king of North America, well, then that’s the truth. It’s reality. Likewise if everyone in the government believes that Elon Musk can fire whoever he wants, then he can, because everyone will just go along with it.

So what is it? Phospate Removal Material doesn’t tell me much. Is it activated charcoal? Ground peanut shells? I need to know.

A paper on the topic reports that

Several adsorbents have been used for phosphate removal from water. They include; aluminium-modified biochar (Yin et al. 2018), aluminium-doped magnetic nanoparticles (Xu et al. 2017), laterite soils, and black cotton soil (Reddy et al. 2020).