Please help with my SPS

[Leaguecityreefer]

Hi reefers here is my problem with most off my coral. The tank is 300G was setup this APRIL so is 7 month now , the problem I have now is I can’t keep my SPS growing ,all the sps I put in the tank is more then 3 months now I don’t see no growth I mean 0% growths rate.The color of the coral is not the same when I got them
Parametes:
Cal 480
DKH 7.7
Mag 1350
No3 5Ppm
PO4 0.034
PH 8.2-8.4
Tmp 78 all the time
Salinity 1.025
Potassium 360
Bi- weekly 50g water change with brightwell Neomarine salt
Last week I just installed a zeovit system hoping that will help
The light is 3 radion G4 pro and 4T5
And 2 MP40. 2 max

 

[Rcollick]

All your parameters look good. Can you share your light schedule or do you have a par meter. Only 2 mp40s in a 300g? Which radion lights the 30 or the 15

 

[Leaguecityreefer]

2 mp40 and 2 gyre 250 radion xr 30 yes I have a par meter the par I have on my coral any where from 200-300

All your parameters look good. Can you share your light schedule or do you have a par meter. Only 2 mp40s in a 300g? Which radion lights the 30 or the 15

 

[SOCOM]

300 par is on the low end. I start to see great growth at 400 par. Spectrum plays a major role in growth also along with alk, comparing it to growth rate. higher alk, higher growth. push it up alittle and maintain the same nutrient level, you will be okay.

 

[Stuartmercer]

It depends on your lighting and flow pattern. Also sometimes it can take SPS a while to get used to new conditions before they take off. if your lighting is not that good, I strongly suggest getting new lighting. Also, take the time to get a powerhead that randomizes flow because it will ensure the coral is getting the "Juices" they need.

 

[Leaguecityreefer]

I will increase some par over next couple week to see if that helps thank you