What gear for a SW?

[Dwarf Puffers]

ummm... what are reef crystals?

And if my house is usually in the early 70s in temp, do I need a heater??

I keep tropical fish without one, It's cold down here so we need heat year-round

 

[Germanman]

reef crystals is a salt brand. one of the best if not the best.
http://www.drsfostersmith.com/Produ..._-Salt_Mixes&ref=3969&subref=AA&N=2004+113009

and typical tropical reef temperature range is 76-81 most choosing 79 or 80

 

[Longinus]

And if my house is usually in the early 70s in temp, do I need a heater??
I keep tropical fish without one, It's cold down here so we need heat year-round

its worth it to pick one up, if your house is usually warm you could probably get away with a smaller heater for the size of your tank. Thats just my opinion anyway, and along with that, listen to the guys here, they have really helped me out in getting started.

 

[Yash]

I too would most definitely recommend getting a heater ... early 70s is a little too low IMHO for most marine livestock.