Nitrogen excess ( leaves clawing + dark green leaves ) + Ph fluctuation ( ca be seen on the last pictures ) + Over fertilization OR too much heach ( tips of the leaves are starting to burn ) ; Possible future issue : Nutrients lockout due to the fert excess
Wait until the soil is dry and water with fresh water to remove the nutrients excess from the soil OR cut the nutrients for 2/3 waterings or more . After that do one watering with nutz , one with water and repeat until the end . Check the watering solution PH and correct it if it's not between 6 and 7 ( sweet spot at 6.5 )