I wanted to grow the purplish and blueish algae on the live rocks. Right now i have base rocks but i am planning on buying some live rocks soon. Do i need a speical light shinning on it all day to simulate the day light or is that just for a reef tank? Do i need a protein skilmmer inorder for the algae to grow successfully? Also how long does it take for the algae to grow and inverts to start to develop?