I returned from a few days out of town to find that the large grove of lettuce caulerpa in my 20g FOWLR is dying off. It had been growing and looking very good, and then all of a sudden, it's dying off extremely rapidly. At this rate it will be completely decimated by morning.
The tank is 20g, with a 5" DSB, and 25 lbs. of live rock. It has been running for about 2 months. No ammonia or nitrite detectable. Nitrates are around 15, pH = 8.2, SG = 1.025. Lighting is a single 15W fluorescent Coralife 10,000K bulb. The only parameter that stood out as being a little off - the temp had dropped to around 73 degrees while I was away. Could this have been the cause for this rapid die-off? Any other ideas?
There is also quite a bit of red grape caulerpa and some other red macro algae that is still fine.
The tank is 20g, with a 5" DSB, and 25 lbs. of live rock. It has been running for about 2 months. No ammonia or nitrite detectable. Nitrates are around 15, pH = 8.2, SG = 1.025. Lighting is a single 15W fluorescent Coralife 10,000K bulb. The only parameter that stood out as being a little off - the temp had dropped to around 73 degrees while I was away. Could this have been the cause for this rapid die-off? Any other ideas?
There is also quite a bit of red grape caulerpa and some other red macro algae that is still fine.