Hello. First to introduce myself. My name is Georgi, I live in Stamford, CT (originally from Bulgaria). I've had FW tanks for about 15 years until I came to the US. Recently I got a gift - Aqueon Basic Kit Aquarium 10. I've always wanted to have a salt water aquarium and it looks like the US is the place to have one. So I spent the last few days reading about SW tanks and I still have to figure out a few things but I feel like I've got the gist of it. Here is my plan:
I will use the 10g tank and the aqueon powerfilter 10 that came with it. The lights will have to be changed. To finish the setup and start the cycling I am planning to get:
1x Koralia
Nano powerhead
1x Marineland 50W heater
10-15lbs of LS
10-15lbs of LR
I'm still looking for good light options. I have decided on PC, and was looking at the Coralife kits, but they have a 12" and a 24" ones and my aquarium is 20" so these will probably not work out. Any suggestions are welcome. I'd like to have both moon and day light
I'm also thinking of getting the AirWaterIce Mighty Mite RO/DI system as it is about $110 right now and looks like the cheapest clean water source, however I'm concerned about the installation because I live in an apartment complex and I cannot be drilling holes in the pipes and such to tap the tap

. If there is no way to just hook up the system to the tap, get some clean water and unhook it, I might have to go the Brita filter way (I know it not enough but I don't have a walmart or a LFS close to me for cheap clean water, and I'm not paying $3.50 per gallon for distilled water.
If anyone knows a cheaper RO/DI system that is easily installed (in a non-destructive way) I'd be happy to know about it.
Btw is RO/DI water drinkable as regular RO water?
After the system cycles I'll put a clownfish or two, some 'cleaners' and maybe a nice shrimp. As for coral, I'm still reading, but I know I can get some really neat ones for this small tank.
Other things I think I need:
thermometer
refractometer <- any suggestions on this one?
fish net
Sea salt (Oceanic or Red Sea)
Chemical testers for the water.
My primary stores are Pet Smart and a Petco store not too far (no close LFS around

).
So, again, Hello to everyone. It looks like this is a great community and I've learned a lot already from it.
Any suggestions are welcome.