Rock will displace the water, so leave the top 3rd until you add your rock. IMO
, you can mix the salt in a bare bottom tank with a couple of well placed powerheads (you'll use those later for everyday tank circulation anyway). You should be able to get pretty close to the target salinity level - 55g @ 2/3 full = 36g. Now, use the cup per gallon directions on the salt bag/bucket to get there. If you miss it, you got plenty of time with the remaining 1/3 to fill.
After the salt mix, I added bottom layer of rock. I went for flatter dry rock pieces and added sand on top and around'm. Then I began stacking the others. I kept rock on the bottom of the tank as opposed to on top of the sand to ensure those burrowing creatures didn't cause rocks to shift and fall.
Dechlorinator? Hmmm. Not something I'm familiar with, but I'm thinking if you use RO
filtered water, you won't have any problems with chlorine.
should have that book. If not, see the library (top of page) at this site too.
Check out the AquaC HOB
skimmers. I hear good things about'm.