It is neat now that I think I know what was causing it. I have seen calcium carbonate precipitation in a reef tank one other time, and they look like snowflakes, not tiny spheres.
From a practical standpoint, if your corals or clams are spawning, the main danger, IMO, in a reef tank is an ammonia spike from the eggs/sperm decaying in the water since we have such a small water volume in our systems.
I use 100 micron filter socks, so I'll rinse them out every day for a couple days just in case they have caught a lot of the stuff.
I had a similar event shortly after setting my new tank up. I found out after a bit of looking that it was my large green brain that was doing it(would pulse out a jet of love goo every 10 sec or so), and that appeared to be it. Clouded my tank up for a full day, skimmer went nuts and that was about it.
EnderG60;574046 wrote: I had a similar event shortly after setting my new tank up. I found out after a bit of looking that it was my large green brain that was doing it(would pulse out a jet of love goo every 10 sec or so), and that appeared to be it. Clouded my tank up for a full day, skimmer went nuts and that was about it.
LPS are often known for jettisoning their "surplus" zooxanthellae this way too. It is often confused for spawning. Coral;s spawning i captivity is not frequent, but not rare either. Sperm is not commonly pollutive, whereas the eggs are significantly larger, and can be readily seen.
EnderG60;574046 wrote: I had a similar event shortly after setting my new tank up. I found out after a bit of looking that it was my large green brain that was doing it(would pulse out a jet of love goo every 10 sec or so), and that appeared to be it. Clouded my tank up for a full day, skimmer went nuts and that was about it.
Didn't Joe have a spawning event around the same time last year. Something to do with the moon cycle or something as a few other RC'ers saw it that same night I think.