what type of lighting are you using? They look Great i know people who use miracle grow soil but most usually flush it before using. I am curious to see how this goes with the miracle grow soil will keep an eye on this keep it up
They look fine. The MG will be fine, keep the PH of your water a little lower; in the 6.0-6.5 range with the MG soil and no nutes. Once they get little bigger nd you transplant, use some better soil. I know a few very experienced growers who swear by MG for the first few weeks of growth; seedling and early veg stages.