Why would you stick your finger 3 inches into the soil ? You will damage the roots.

You lights are not strong enough to support the plants... 100w equivalent is about a 14w CFL.

You need better lighting... I use 190w of LED and 260w of CFL.... You are a very far cry from that...

Two 3 week old plants cant survive on 26w of CFL... You get out what you put in... small watts = small plants...