New to the forum and new pico


New Member
Hello all
I just recently (1 day ago) made the jump into the nano reef world.
I started with a small 1 gallon but while looking for a filter and lighting the cost quickly went up.
While thinking of what route to go I decided to use an old JBJ Picotope I had in the garage.
I have 3lbs of sand 3.5lbs of live rock.

A few questions I have is regarding water changes.
I have been using water from my local FS the water was from a long time running coral tank.
How often do I need to change the water? How much water should be changed? With water evaporation would it be safe to add from the extra water I have from filling the tank?
I have tried looking for this online but have not been able to find any answers.
Thanks in advance.