+1 for tlc.1.020-1.023 for fish only with live rock. 1.026 for reef.
every 2 days check the level of your tank,the easy way is mark the glass with pen or tape,if you have a sump then mark the return pump section.top up the water level every 2 days with RO
water(not salt water).each week remove 10% of the tank water and replace with saltwater,20% if you do it 2 weekly.mix your RO
water with salt 24hours before you do the water change,put a heater and a powerhead in with it to mix and heat the water.check the salinity and temp of new water,if it matches do the change.