I have already taken out 5 whelks -- Why? Here are the Shimek articles that inspired action: Whelks Pics of Whelk Eating Limpet. Also found good pics and advice on Melev's Reef here and here. Of course, watching it go after my turbo was the final motivation. The ones I caught yesterday I brought over to my lfs -- he recognized them immediately, especially after spotting the body; they are quite distinct. I removed another two today.
Yesterday, I wrote that I didn't think the whelk had done any damage because the zoas didn't seem upset. However, I really don't know how independent each stalk is from its neighbor. Today, I noticed some red patches in the white "film" that seems to cover the stalks of each head. I am not sure if this is whelk damage or not, but it does make me more willing to remove them!
Whelk -- not a great photo b/c cannot see mouth part, but shows typical body pattern
Red Acan -- for lack of a better term! Adjusting nicely
On Friday, my salinity should be back up to normal and I'm bringing home a gold coral-banded shrimp! The poor thing lost a pincer, but it will come back after the next molt. The lfs thought it had disappeared, but found it hiding quite cleverly under a rock when moving stuff around. He is saving it for me (I hope!). I am also going to add a maxi-jet 900 to increase flow some. And maybe it's my imagination, but it seems to me that the ricordea are just a tad more colorful since I dosed with minimum doses (M/W) of Instant Ocean's Reef Accelerator. But, this could be some sort of visual placebo effect .
Edited by msscha, 29 February 2012 - 09:19 AM.