If you change the bulb which I suggest you do also, then you will have 18 watts of CF/PC lighting over 5g. So looks like you will be still 9 watts short according to houseofcards:
Originally Posted by houseofcards
No the blue/white bulb probably won't work. If you're using a CF/PC bulb you probably need at least 27watts of freshwater light (5500 to 10000k) to make your setup work with those plants. You'll also need some form of carbon, preferably co2.
But you could try it and see if it works for you.
Very nice hardscape btw, I like!