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Most of us measure our success with SPS and other corals in our reef tanks based on how fast they're growing. It's a good visual indicator of how healthy our sps corals are - and foods like Reef Roids or New Life Spectrum's Reef Micro-Feeder are super easy to feed so if you're not doing that already you'll probably have good luck if you start. It's also trivially easy to hatch brine shrimp, and SPS corals like Pocillopora acuta will readily accept them.
The paper in this video is looking at five different foods for Acropora millepora and Pocillopora acuta and measuring them based on a bunch of things, including weight gain (growth). A. millepora is a very popular SPS coral in reeftanks so I bet a lot of you have them in yours! Unfortunately, the team found that raw seawater out performed every other feeding in terms of growth for A. millepora. P. acuta on the other hand - it grew best with newborn brine shrimp - Artemia nauplii.
That said, it's not just LPS coral that needs to be fed. Stony corals like Acropora only get about 90% of their nutritional requirements from their symbiotic algae - meaning we need to make up the last 10% which, by the way, has critical elements like Nitrogen and Phosphorus in it (the algae in their tissue doesn't provide Nitrogen or Phosphorus compounds). Fish poop MIGHT be able to make up for that, and for sure corals can absorb chemicals from our aquarium's water - but direct feeding of phytoplankton or an actual coral food will help them immensely.
Comparing the capacity of five different dietary treatments to optimise growth and nutritional composition in two scleractinian corals.
Jessica A. Conlan ,
Line K. Bay,
Andrea Severati,
Craig Humphrey,
David S. Francis
PLOS
Published: November 28, 2018
doi.org/10.137...
AlgaeBarn produces a phyto mix called OceanMagik which could be an interesting product to try.
www.algaebarn....
Here's an easy culture system for small live foods and phytoplankton, produced by Reed Mariculture.
reefnutrition....
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