Itkenbo,Post a pic of the algae.
I really hope its not Dinos.If it is,you've got a hell of fight on your hands.
But just in case,here how I got rid of em.
I siphoned out as much of the dinos as possible.Then completely blacked the tank for a full 14 days.During that 14 days,all I did was keep the tank topped off and dripped kalk 27/7 to keep the PH at or above 8.6.The day I turned the lights back on,I did a 70-75% water change,siphoning everything the hose would pick up off the rock along the top 1/4" of sand.
I had made my mind up,that if that handt of worked,I was going to pull every one of the fish and ionverts out and dump a gallon of bleach in.