why is my forest fire coral growing so slow

[KÜRŞAT]

hi, my forrest fire coral has been with me for 2.5 months and it is growing very slowly why ?
parameters;
ca 410 ( salifert )
KH 8.2 ( salifert )
nitrat 2 ( salifert )
phosphate cannot be measured ( salifert )

lighting xr15 g4 pro sps ab+ %50

 

[vetteguy53081]

May be insufficient alk ir mainly calcium and flow
Lack of nutrients also
Adding aminos may help also

 

[sqznest]

I've found that they need a solid magnesium supply to be happy. Nothing outrageous but stable at 1350+. The one I got took about 3 months to get settled and then went crazy. So perhaps time is the best medicine.

 

[Roli's Reef Ranch]

I keep my mag at 1400 and they double every couple of months. I have FF digi, Green digi, and bubble gum all doing well.

 

[Fishyfish22]

The only fast thing that happens in a reef tank is death. Just give it time, some coral take longer to get established.

 

[Anemone_Fanatic]

Looking at those photos, that is actually pretty good growth. Now that it has encrusted a base, it will start sending out more branches. I hope that this helps!

 

[nereefpat]

I agree that it's actually growing. It has to get a stable base before branching.

 

[Freddy0144]

There are a few things to consider here, not sure how you are testing PH but with the Seneye or PH probe you should get an hourly reading, look at what the swing is over the course of a 24 period. evaluate if it is stable and what the dip is during the night when there is no light.

Additionally, Corals need some small about of phosphate to promote growth. From what I have been reading and watching levels below .03 are good.

Also +1 for the above comments on magnesium

 

[KÜRŞAT]

Thanks for the valuable comments, I will take them all into consideration.