Critical purple

First week, 2 of the plants are looking healthy and great they were fed on APR 25 next feeding the 27th. And the 3rd seed is germinating and will be put in the pot either tonight or tomorrow night. And it will follow a regular 1st week seedling schedule water only but I am thinking of less light since the light is only 20 inches away. (APR 26)10:51 am It’s towards the end of the first week of veg plants are starting to turn purple both plants are about equal and I still have a 3rd one germinating and will be put in as soon as it’s ready.