i uploaded them againPics aren't working re-post?
ill second this opinion. i just dont see the burning.I'm not seeing the nute burn in your last picture of the top of the plant. I would expect to see some downward hooked leaf tips.
The second pic looks like nutrient solution may have been splashed on the leaf. If it is just your bottom leaves, it may not be very serious. A pick of the whole plant might help.
If its nute burn do you know what nutrient would cause this?..or is this a guess??Yea looks like nute burn to me, check your ph and do a flush even if it isn't nute burn a flush could help.