Thanks for the tips. We did use tap water as our 5 year old couldn't stand the wait. We used a dechlorinator - Top Coat and mixed that in this morning. We just added in the salt slowly mixing in tank. I know not the best - but given our setup in the room where we have it - it was easiest. The kids kept making checkmarks on their own notepads noting amount - volume.
We stand in a 14 gallon biocube at 10.75 gallons of water and then 21 1/8 cups of salt and 1/8 last cup for the .25 gallon. We'll test salinity tomorrow. I've been soaking our hydrometer for testing.
One thing - the LED
lights seem to stay on all the time regardless - you can't seem to turn them off all the way. I did purchase a timer - so I guess that's one way to deal with it. Also - we've got a pretty substantial drip loop going - made sure the power supply is about 4 feet to the right and it's above the loop.
Not much to do now but wait and test.
The shop recommends in 5-7 days to bring in a sample of our tap water and our tank water to see if we can get some live rock.