AquaSD Rainbow Millie

SPS Deep Dive – AquaSD Rainbow Millie

Back in 2008 AquaSD in San Diego was unpacking a shipment of corals and came across a stunning Acropora millepora that created quite a buzz among SPS enthusiasts. Frags of this coral, the AquaSD Rainbow Millie, started to spread around the reef keeping community, becoming a must have coral for many SPS collectors, especially among those who craved millies, like me 🙂

There are other corals today that generate much more buzz, and higher prices, but the AquaSD Rainbow Millie is certainly a worthwhile addition to any reef tank. It has neon green polyps that contrast beautifully with vivid orange corallites, which have more pronounced coloration near the tips of the coral’s branches.

aquasd rainbow millie


Wicked Long Polyps

So what else is cool about this Acropora? The long polyp extension on the AquaSD Rainbow Millie creates a neat undulating effect in the current, setting it apart from other millies with smaller polyps. If you want some tips on how to maximize polyp extension on this coral or any other coral, you can read this article on the topic. As for placement, this coral does well near the top of a tank since it prefers a lot of light and high flow. They can be fast growers so it is best to give a frag a lot of room to spread its wings over time.

Additional Resources

If you would like some help with a new tank build, including help designing a custom aquarium, or help re-configuring your current setup then you can visit this page for more information. And if you are looking to add some equipment, I do sell GHL, Pax Bellum, Reef Octopus Calcium and Kalk Reactors and Royal Exclusiv products, including Dreamboxes, which is the equipment I use and recommend. I also sell Reef Brite metal halide and LED fixtures as well as Maxspect & IceCap Gyres.

As for additional insights and information, please explore my many other reef tank and SPS related articles as well as my YouTube channel. For an even deeper dive into reef tank care you can check out my Reef Keeping Master Class. This online course is an immersive and one of a kind educational tool designed to help reef aquarium hobbyists build and maintain a beautiful SPS reef tank. The course is a series of video presentations with some supplemental video from my YouTube channel. There are also quizzes to help students retain and understand the information presented in the course.

Need some frags…..I can help with that as well 🙂 Please visit my SPS Frag store to see what is available.

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