Let's Talk SPS Calcification Inhibitors

tutmatt3

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Hey guys!

Thought this would be an interesting thread to have, but what would you guys say are the most significant inhibitors of calcification that result in slow SPS / Coraline skeleton growth.

Interestingly enough, I have some coral that only encrust and have very limited skeleton growth. I know this can do to flow & other parameters as well - but in addition I never get coraline growth on the back-wall, rocks, etc - which can also be due to another algae present there and takes over the surface first.

One note that made me think I have limited calcification specifically is I have a Hollywood stunner chalice, which has grown maybe 5% skeleton, but has popped out MANY MANY more eyes on it's current surface. Even noticed this with some montis that pop more polyps rather than produce more skeleton. Any coral that loses a bit of tissue has also recovered quite fine, so I know tissue growth for me is going okay, now just trying to work on skeleton structure, so.... let's hear them!

I've heard that high phosphates can result as an inhibitor. Low PH, low alk / ca / mg levels - but what else have you guys experienced as an actual inhibitor - and I guess maybe more specifically from a chemistry standpoint? Doesn't have to be, it can be too little / too high par, etc. Not something that isn't "ideal", but something that will actually inhibits it from happening.

Looking forward to hearing all your input!
 
Well, I have a list of chemicals, but unless you are adding them, it isn't likely a concern. :D

Etridonic acid, for example, stops coral calcification. Presumably by getting onto growing crystal surfaces, poisoning them for further growth.
https://en.wikipedia.org/wiki/Etidronic_acid

https://www.sciencedirect.com/science/article/pii/002209819500045S

"In the present study, photosynthesis and calcification in branches of Stylophora pistillata were measured in the presence of 1-hydroxyethylidene-1, 1-bisphosphonic acid (HEBP), a specific inhibitor of mineral deposition. HEBP strongly inhibited calcification of the coral with 36% inhibition at 0.01 mM, 90% at 0.1 mM and 99% at more than 0.5 mM."

FWIW, 0.01 mM = 2 ppm
 
Well, I have a list of chemicals, but unless you are adding them, it isn't likely a concern. :D

Etridonic acid, for example, stops coral calcification. Presumably by getting onto growing crystal surfaces, poisoning them for further growth.
https://en.wikipedia.org/wiki/Etidronic_acid

https://www.sciencedirect.com/science/article/pii/002209819500045S

"In the present study, photosynthesis and calcification in branches of Stylophora pistillata were measured in the presence of 1-hydroxyethylidene-1, 1-bisphosphonic acid (HEBP), a specific inhibitor of mineral deposition. HEBP strongly inhibited calcification of the coral with 36% inhibition at 0.01 mM, 90% at 0.1 mM and 99% at more than 0.5 mM."

FWIW, 0.01 mM = 2 ppm
=O
I'll be glad I'm not adding them lol. I guess as far as my knowledge goes Haha

Would you go as far to say that nuisance algae / dinis / cyano inhibits coral as well , or rather they uptake the nutrients corals needed to grow, orrr they're a coincidental item in the tank as a result of most likely high phosphorus or another concern that is causing inhibition
 
As far as I've seen flow does effect the way an sps grows out.

I used to run real high flow across the surface an one sps kept growing out flat.

Cut the Gyre back to the lowest setting on pulse mode and the sps is spiking up and out.
 
Yeah, I've heard of many people using a longer venturi to get air from outside the house, but I wonder at what length airline does performance suffer
 

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