Hello guys,
I need help in identifying a algae type growth at the bottom of my tank which has sprung up in 9 to 12 days. The only thing new I introduced into the tank was a new lighting system and a bunch of Elodea plant strings. I have included a photo, if someone could let me know if it is beneficial or not I would greatly appreciate.

http://s1338.photobucket.com/user/bo...quatic%20forum

Warmest regards,