Pot looks ok, but pushing it, lol.
A 5-5-5 nute can cause problems in flowering. Way too much nitrogen. Would look into a good flowering nute. I use the Fox Farms line, but there are other quality ferts out there. Possibly easiest, is to get a 2 or 3 part nutrient system. A 'G-B-M' (Grow - Bloom - Micro) regimin can take you from start to finish.