why is my Samolus Parviflorus doing bad?
 

I've got a Samolus Parviflorus which was doing really well about a month
ago.. I have since switched using co2 tabs and gone with a 10lbs bottle with
the whole setup. (overkill, i know) Since then, it has been developing
light algae.
ph - 7
all other levels are normal using the test kit
light - 35watt Flora-Glo
fertilizer - 15ml Tropica Master Grow once a week after a 1/4-1/2 water
change.
At the same time I add 1 ml of liquid Fe and continue every other day for 3
days, so 3 ml total for the week.
I add 1ml of Potassium twice a week
- The lights are on for exactly 12 hours/day
- The tank is partially full with 7 swords, 1 anubias barteri on wood, 1
Samolus Parviflorus, and a 1 fast growing hygrophila corymbosa which is
totally green and no algae..
- I've got about 9 neon tetra's, 4 angels, and 1 strawberry tetra. had an
SAE, but died (old age)
- Aquaclear 200 filter with carbon, ammonia, sponge..

any suggestions?

I was thinking of picking up "the beast" from AHSupply, 96 watt 6500k to
replace the lighting, but I'd like to find out what's going on first with
this plant before i go ahead with it..

is the Samolus Parviflorus considered a fast growing plant? I'm wondering
if i should pickup a few more hygrophila corymbosa's?? maybe they might
take the algae away before it can develop?

Mike