You need to dose Ca/Mg/K+, traces and PO4, even NO3.

Dose after each water change.
The brown algae will decline after 2-4 weeks or so, maybe less.

Why would the plants need any time to adapt as Amano suggest to a new tank?
Why would that not also apply to tanks that just got trimmed also?

That makes no sense to me.
He just thinks/believes that less nutrients are better and prevents algae, clearly that is not the case though.

My question to you is what would the plants do normally in an established tank if you all you added was K+ for several weeks vs a tank where you added all the nutrients?


Regards,
Tom Barr