My set up is a 26 gal bow front. I have replaced te light hood with a DIY setup with 2 100w CF bulbs. Well now I have algea on things but my plant is doing great. At the time I only have one live plant. I'm not using any ferts or CO2. Should I downlize the wattage or start using ferts like Flourish Excell. I've looked at the DIY Co2 systems a little. I'm open to any advice. Thanks.