Originally Posted by jesssan2442
My lighting is a desk lamp with a 13w 6700k bulb, I was going to get a higher wattage but My tank is only a 3g and I didn't want to much...
I assume 13w fluorescent? Your sitting at a 60watt equivalent so you are already at the high end of lighting for a small tank, no need to go higher.
This is the exact same kind of lighting I have for my 2.5 gallon :) I have a desk top lamp with 13w fluorescent light bulb at 4100K for 10hrs a day, so yours is actually a bit higher than mine.
Since you have such strong lighting, you can probably use excel then. I would recommend you use it when you have more plants though. To avoid algae, get yourself some intense growers, they will out compete algae. Things like hornwort, dwarf hygro, penny wort, cabomba and guppy grass will grow an extra inch every week.
I am using 4 drops per day for excel, despite the strong light and supplement, I have no algae.
p.s. if you have incandescent then its low lighting, than scratch whatever I said above. lol