I'm a fan of finding the root of the problem instead of just dumping chemicals that are only temporary solutions in your tank. I hear that one needs to balance the light, nutrients, and something else that I unfortunately can't think of right now.
10 GALLON PLANTED TANK:
2 x 10W CFL; Fluval U2 internal filter; MGOCPM/Petco black sand cap
A Silent Cycled Tank