[redman88]

should i use a latex paint or spray paint for the back of my tank?

 

[dantimdad]

I always use spray paint. But, you can remove latex paint a lot easier if you change your mind on the color.

dantimdad

 

[fshfanatic]

I use the cheapest black spray paint I can get at Walmart. .88 a can. Looks great.

 

[DrinkTheYeastMix]

Have you guys ever had problems with the spray paint dripping?

 

[[email protected]]

Given your location I'd go for alien technology.
As to a background, consider a plastic garbage bag crunched up and taped in place with bulges and loose areas. That will give you a bit of an illusion of depth and it's removable with out using a razor blade. Light re-strike is improved over a flat coating as well.