Hey Mate,
What exactly is your concern? It isn't too bad ifbyour pH was lower over a certain amoubt of time. Maybe thats why it's a bit discolored. Adjust your pH on your required value and go on? She looks like she's thriving, and stays, in week 5, with 50cm. That's ok👍
Don't get nervous, or try to invent the wheel new..
You're doin' a great job on your Señoritas...
Good luck for the rest of the way!
Cheerz
OimRausch ✌️