Tank problems

[Morel]

My 55 gallon tank has been up for 5 months, and all of a sudden I have what looks like a cycle going on. (Green cloudy water) Or it maybe algae. but the problem is I can't use any of the normal aglae solutions due to my live rock..

Um..

Any ideas? =p

[OrionGirl]

Test results? Any changes to the tank (ie, feeding, stocking, cleaning, lighting?) Green water is often from overfeeding--a shift in nutrients allows the algae to take off. What all fish are in there?