Yer plant is looking really good. I think yu are doing just great on it, given the circumstances of yer situation (first indoor grow, first time dealing with nutes).
I say don't change a thing.
I wouldn't disagree with Dman here except that I really don't think adding Koolbloom would make any difference for yu because yu are under CFL light and are not able to maximize yer growth potential. Yu are getting IMHO the most yu can get for the amount of light energy that is being supplied. Adding anymore in the way of nutes at this point would be wasted at best, and damaging at worst. (Again this is my educated opinion
) It really comes down to elemental ballance. The plant has a genetic code that tells it to make the most of its environment in order to reproduce. It takes in light energy from the light source available and uses that to power its sugar building machines (chlorophyl). At the same time it takes in nutrients from both the roots (water and chems) and carbon from the air(CO2). All of these things must be within the proper amounts for the plant to survive, and additional amounts are used for the plant to thrive and reproduce. If any one of these elements is below requirements for "maximum thrive" then the plant will work with what it has to thrive as best as it can. If one or more of these elements is below requirements for the plant to thrive, then it will do its best to survive.
( I had some plants last year that my partner royally screwed up the chems on them and was afraid to do anything else. So the plants went all the way through flower on just heavy water, light, and air, and they still grew OK and produced a "decent" amount of bud. But nowhere near what they could have if they would have had proper nutes to go along with the air, water, and light.)
At this point yu have ballance within the elements of light, water, air, and nutes. Before when yu were using a different nute formula yu had an imballance that was causing the problem. It may not hurt at this point to add an extra bloom formula to the mix, but if yu are not able to supply the level of light energy that the plant needs to process the extra nutes then the extra nutes will not be able to be used.
However, I am making a very large assumption here from what I can see, that yer lights are not providing the amount of lumens needed for "maximum thrive". If I am wrong and yer plant is sitting under more than 8000 lumens per square foot of orange/red spectrum light, then yu would benefit from extra bloom nutes, and all that I have just said is only educational:doh: But I hope either way that this helps yu understand how the ballance of elements is what is important.
in equassion form:
propper light+propper water+propper air+propper nutes= good growing and thriving conditions
any drastic imballance of any of these elements= problem with plant
low light+low water+low air+low nutes= weak growth (but in ballance no major problems)[/COLOR]
increased light+increased water+increased air+increased nutes= increased to maximum growth (in proper ballance maximum thrive)