hi everybody! Just wondering if my tank cycled already, ive only had it for 3 weeks and i had the spike and leveled also had a algea bloom and that went away too, is it time to change the water yet, still looks clean and my damsels survived the cycle! how much water do i change in a 14 gallon, since there are live rocks inside does that mean i really have about 7 gallons of water? And when should i grab a clean up crew, whats the best CUC like how many snails or shrimp or star fish... also i have a biocube 14 gallon but i still have the bio balls, no carbon filter just the oc protein skimmer should i swap the bio balls? and how do i promote growth of purple and neon green algea on my rocks?