do not add any more ferts and make sure ur giving them proper ph'd water(this is key to fast growth) Having proper ph is what makes nutrients available to the plant.. no matter how much nutes u throw on it, if it can absorb the little that is there why would it take more...

the 30-10-10 is wonderful(tons of nitrogen, and less of the P-K)..... welll ive used it outdoors, but u need to be carefule..., those small plants dont need any ferts, their main goal right now to build a healthy roots system... and i promise it is doing that right now as we speak, then a lot of leaf growth comes then the roots will take over the pot it is in, then u need to be careful with the 30-10-10 with a small container like that, u want it to kinda get root bound, but transplant a few days before it is too much... you want the plants roots to basically always be on the offensive in the container.. but if the container can beat the roots, in ways such as overwater, underwater, high ph, low ph, too much ferts, not enough.... it all needs to maintain a proper balence and over time the container is going to lose the needed ingredients in the soil and thats where ferts come in, but with plants that small, u dont need anything but proper water for atleast the next 2 weeks, and at that point u will prolly want to transplant into something bigger and when u introduce new soil all of sudden u have a bunch more unusued nutes that now become available, and in that situation of u wanting to flower quickly, let it veg for 2-3 weeks in the new soil and keep up with just plain water then place into flower, and give them some rose bloom during the firs