newbie question: Saltwater from LS or self mix?

[balefire]

I will choose salt mix any day. The salt mix that we buy have been scientifically mix to contain the correct amount of mineral and trace element to mimic the reef enviroment.

[Solasido]

Saltmix better, but you will have to prepare DI water to mix. For pico tank, you can use NTUC distiller water instead.

Pico tank's water parameter is much more difficult to control.
You may be able to keep just a small fish and some hardy corals.

[clkong]

if you are using air pump to mix the salt mix, then make sure you cover the container, else the surrounding will be sticky. Likewise minimise mico bubbles created by your filter or pump. Clean the surrounding with wet cloth immediately after your maintenance.