Autopots and quantum boards - Blue Dream

They seem to be getting a little bit bigger but not by much. Hoping this just means they're packing on weight within the size they already have. The one plant that's been pickier throughout the grow has some signs of either light burn or nute burn on the tips. Not exactly sure which. It has always had really minor signs on the tip but it never got worse so I've left it. Wondering if it is because I upped the nutes last week. Either way I raised the light an inch or two just to be sure. Need to mix more nutrients tonight so probably going to go back down to what I had been doing before.