Originally Posted by bananimal

I forgot which of the two spray tanks is used for fertilizer and which for Roundup. Found the smaller one first that had a bunch of mix left over so I used it.

Turned out to be the fertilizer solution. Further search found the Roundup sprayer which is clearly marked for weed killer. Mixed up a new batch and went at it. I hope this never happens again!!! It's too hot out there !!!!!!!