awesome. I'll hopefully have the basics of the 10 g set up by then. I'm getting glass so no drilling for me!
Do you plan on having Live Rock? I thought you had said Live Rock earlier... If so ditch the filter. You shouldn't need mechanical filtration with LR (the biological filtration) in a FOWLR system. I'd get a full 20 lbs of a good Fiji Live Rock.
You can get the filter as an added backup but I wouldn't use the bio-attachments at all. You can run the carbon and filter occasionally to help with water clarity.
10 lbs of sand should be enough and with that small of a tank I don't think it matters that your getting Live Sand vs just regular old aragonite. I would just make sure it is a sugar sand size. I wouldn't go bigger than 1.2 um (microns) The live sand in a bag in my opinion is just a marketing ploy as there really isn't anything they can do to sustain the bacterial colonies in that plastic bag through months of being on a store shelf, warehouse etc.
The lights will be enough for a FO or FOWLR tank but not really anything else like corals. Well you might be able to get away with softies.. Maybe..
The Hagen heater I'm not sure about. I had one a LONG time ago and if I'm remembering correctly it was hard to get stable at a specific temp. I use the visitherm stealth heaters now and like them. (But that is just what I like.. and is JMO) Maybe someone else can chime in on the heater.
The thermometer as long as it is an LCD it should be ok. I have a coralife. One way to see if it works correctly is to take a cup, fill half full with ice, place the probe, fill the rest of the way with ice and then fill with water. Let sit for like 5 minutes. It should read 32 degrees if it does it was properly calibrated.
What's a good moon light for this 10 g tank?
My guy told me I had to have a heater...is this true? Also, I see some folks have a "chiller". Why is this and do I need one?
Is the filter we are referring to the same thing as the protein skimmer? If not, what kind of protein skimmer would you recommend?