I converted my old tank of 2 years to my new African Malawi Tank using lace rock and crushed coral. It has been up and running for about 3 weeks now and I have noticed a brown green speckled alagee growth on the tops of some of the lace rocks. It has started to spread to certain areas of the glass & equipment. It is not bad yet, However it seems to be spreading fast. I never had alagee growth before on this tank prior to the tank conversion. The changes to the tank include: PH 7.8-8.0, Temp 78.5, Lace Rock, Crushed Coral, and the use of Seachem Chinchilid salt. I do weekly WC of 40-50% including a gravel vacuum. I think I introduced this growth from the Lace Rock since that is were I noticed it first. Any ideas of how I can stop this growth before it overwhelms my tank. Ideas other then WC/Reduce light or nutrient load would be appreciated. I would like to avoid removing all the lace rock to.