Today an algae bloom appeared in my coral quarantine tank. This is my first batch of coral frags and my first time setting up a quarantine for coral. The frags and tank have been setup for about a week. I used Biospira to seed the tank and used a fresh mix of saltwater to setup the tank. I'm assuming that they are likely Dinos because the tank is new and clean and I would assume that there are hardly, if at all, any nitrates and phosphates in the tank.
You can see it's really taken over the stony skeleton on the one blasto frag, and it's also starting to grown on the bottom of the Duncan skeleton as well. What caught my eye, and made me take notice, were these black patches on the frag rack. I'm not sure what they are either. They are very different from what's growing on the corals.
Any help is much appreciated! Thanks.
![fcb4fc96-b40c-4c76-8449-74fcd4a7ab4f.JPG fcb4fc96-b40c-4c76-8449-74fcd4a7ab4f.JPG](https://www.reef2reef.com/data/attachments/3596/3596305-65d0ed8b1cb4e4e084875217a19b3f37.jpg)
You can see it's really taken over the stony skeleton on the one blasto frag, and it's also starting to grown on the bottom of the Duncan skeleton as well. What caught my eye, and made me take notice, were these black patches on the frag rack. I'm not sure what they are either. They are very different from what's growing on the corals.
Any help is much appreciated! Thanks.
![0af05a73-1e25-46d9-adbd-ac71e6c5d3d6.JPG 0af05a73-1e25-46d9-adbd-ac71e6c5d3d6.JPG](https://www.reef2reef.com/data/attachments/3596/3596290-948229f232c6ae55f05f26a64d695f5b.jpg)
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