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Besides the below I have HOB filters I used for my 10g and 20g tanks if anyone interested.
I have the following for sale:
1) Classic Reef Octopus HOB Skimmer - $75
2) HOB nano skimmer - $10
3) Current LED light strip - $20
4) Green Nepthea - $10 per stalk, not sure how many I plan to cut. They...
That's not good. There were some decent coral. I'm not a big zoa fan, they don't o well for me. The cloves were real nice but again bought 2 frags in past and they melted.
So was out today and stopped by some LFS. There were plenty of nice coral and fish, I saw a very nice large green carpet nem. Then later saw a nice gonipora. I almost took the plunge in buying both but then my senses kicked in, I walked out of the stores. The nem was way to big for my tank...
In my case Vibrant saved my tank so I say its effective short term. I did not continue dosing afterwards but did slowly wind dosage down before stopping.
It does look a fresh wound from fighting or scraped some how. I'm no expert either; just keep an eye it and everyone else.
I never used Erythromycin in a SW tank so cannot comment.