hydro root problem (pics)

I don't know if I should be concerned, two days ago my roots were only less than 1in. out of the baskets. Now the roots are a good 5 in. about 3 in. are submerged in my res.

Anyways, the root tips are a little darkened, I don't know what to think of this.

Sorry for the pics there not that great.

The roots in the first picture look fine. Are those in a 5 gallon white bucket? You need to prevent any light from getting to your reservoir, or you'll have problems.

Ya, I think they might be fine, they are dark on the tips tho. Yes, it is in a 5 gal. bucket. I know about the problems, cause before this bucket I had it in a blue bucket and I kept it in there for 2 weeks and algae was a problem. I guess I'll just keep an eye on the nutes, and switch out nutes once a week.