yeah switch it out ASAP, they will grow a lot quicker with the right degrees K...so basically, even tho u are gonna cut ur wattage almost in half it will probably grow faster...its an amazing thing u wont believe it...and especially since the only light ur plant knows is that 27 when it gets almost 3 times that it is gonna be in plant heaven...POST PICS THO MAN! i wanna see how its doing along with readin! ... but yeah switch it out, and as it gets bigger add more lights, i got three on my plant now and the growth is still pretty good and im using less than 100 watts energy!