This is why it is stated so often a stable tank.. LOL..
Not only in chemistry, but flow, lighting, temp.... Just to name a few.
I have seen for quite a while the change in an LTA and a Ritteri on lighting. Even my BTA get bulbus when the lights are on brighter. (which I think it likes anyway)
It is funny to even see the frogspawn and toadstool act differently with it too.