HCA: Hermit Crab Association

so we bought our son a PP and i am soooo stressed trying to figure all the stuff out. It is in a 10 gallon, I press and sealed the mesh lid. I know i need UVB lighting and UTH or whatever, but i don't know which ones to get. LIGHTING I was told to get https://www.amazon.com/Zoo-Med-ReptiSun-18-Inch-...

we brought a HC home, and didn't realize all the extra work that has to be put into it. We are using a 10 gallon tank. I have been told to use so many different light type as well has heating types, this is becoming a expensive little critter. More expensive then my 2 cats. What should i do about li...