Quite often, as a 5 gallon tank will only suffice for the first few months of a hatchling turtle's life.
No, but it should be cleaned with a syphon.
The tank should be changed partially (25%) weekly.
weekly
ones a week
Passwords should be changed every month.
According to my dealer, it should be changed at 150,000 km.
When its old
weekly
When it is dirty.
When it is dirty.
Bass strings should be changed every 3-6 months, depending on how often you play and the sound quality you desire.
1 gallon tanks & smaller need to be changed/cleaned every 5 days.