Alright well i've had "nano" tanks since i started saltwater. and have always bought salt that had everything i needed in it, like calcium

with my new 90g tank being set up

What should i dose? should i just stick to salt that has everything i need in it?

would it be smart to invest in a carbon reactor?

If i have a fuge, would i really need a to run phosban/GFO?

Is there anything i should consider dosing?