Artificial Green and discoloured sps.

[Heisenberg 78]

Hi guys and girls,

I‘ve searched tirelessly to try and resolve an issue that’s been going on for a while now.

My SPS acros all seem to be exhibiting a green discolouration to bases and tips, or in some cases the whole coral.
Their natural colour of blue/ red / purple dont show as they should..

my tank
around 2/3 months ago had nutrients in excess of 50mm no3 / 0.09 po4, and I always thought that may be the cause; however at present I’m now sitting around 4 ppm no3 and 0.03 po4.
9.6dkh… and things aren’t changing.

All the sps seemed to turn green within a few weeks of getting them, they also go quite dull and don’t express bright col apart from the metallic green sheen they have got…


Ive taken some pics in the hope you can read the situation better with your eyes.

 

[KrisReef]

Took me awhile to understand, (I think?) but when corals start to grow at the base the leading edge of the growth is often (flourescent) green especially under blue light.

Getting corals to color up requires them to be growing and healthy and with the magic amount of nutrients and light and water flow that they enjoy. Your coral seem to be growning so they are probably at least reasonably healthy so now all you have to wait for is the magic to kick in. Good luck!

 

[jda]

When there is an excess of building blocks, corals can get an excess of zoox which go green first, and then brown... usually. Using excessive amounts of blue light can also keep blues, reds and purples from coloring up - your photos are very blue, so no idea if you have them like this all the time, but if you do, more daylight could help a lot.

Well developing acropora tend to get lighter colored growth edges since the zoox have not populated there to full capacity yet. This depends on the species, of course.