4-5 weeks? they were 3 weeks 2 days ago! anyway, keep 1/4 nutes for now until they start growing, and roots hit the water. when they do hit the water you will see nice growth.......when you see they look hungry bump up nutes to half strength. keep an eye on your ph. the only way you can tell if your plants need more is to have ph in range. if its not in range youll get nute lockout. wheres my bag?, lol