Sort:  

I dont think it works that way..... for the hours and you also have 0 gels left

You can only have 2 hours for each turn. So you have to have the rest hours and run hours add up to no more than 2

Then I will rest 0.5

What about the 2 gels, he has 0 left so where's he getting 2 at?

I wouldn't worry too much about that. I could put in 100 gels and it will only use what he actually has. So if he has no gels left, he won't actually use any gels, no matter how much he asks for them. ;-)