So last night my 12 gallon JBJ nano cube was doing just fine and dandy. Today I wake up and the lights won't turn on. I'm still using the stock PC bulbs and ballast. So I call JBJ and they tell me it sounds like my ballast is in need of replacement as it's highly unlikely that both bulbs would go out at the same time. Then they tell me that I have the old style of ballast which is discontinued. They then tell me that I need to replace the hood AND ballast to resolve this, which will cost about $170. I then decided to just go to LED's since it's the same price. BUT, here's my big problem as I see it. It's now Thursday afternoon and I leave town on Sunday for almost a week. I won't be able to fix this until next Saturday, 9 days from now. What do I do? Will my tank survive? Like I've said it's a 12 gallon JBJ nano. The livestock is a single firefish, a single peppermint shrimp, some not so healthy mushrooms (that I'm trying to fix), a not so healthy finger leather (trying to fix), and a small bunch of paly's. Sadly the rest of my awesome coral died a long time ago due to an operator error. So how long with my fish, shrimp, and coral last without any lighting other than ambient room lighting?