Thank You everyone. :)
I use almost only RO water.
This one it's ok. ;) Whole history of my fish in the one place.
It's not perfect. :)
Attachment 114115
Attachment 114116
Attachment 114117
Attachment 114118
Attachment 114119
Attachment 114120
Attachment 114121
Attachment 114122
Attachment 114123
Attachment 114124