1. Lights should be on at a MAXIMUM of 10 hours. Closer to 8 is ideal, but we all like to sit around and watch our tanks for hours and hours...
2. 25% monthly water changes may or may not be enough. Bi-monthly or even weekly water changes can help.(I do weekly 50% waterchanges)
3. Take it easy on fertilizer. Putting "extra" in doesn't necessarily make your plants grow faster
Okay, I usually keep it on for about 4-5 hours. But now, I'll start keeping the light for 8. One more question, i split part of the plant and plant it in another location will it grow?