Base recession help.

[Stormhaven]

Any help with the spreading stn.
After my phosphorus dropped to zero a few weeks ago I ended up losing three colonies.
Po4 is now 0.02
No3 10
Mag 1350
Alk 7.2
Salinity 1.025
Cal 450.
Not sure if this is typical fallout from zero po4 .

 

[Charlie’s Frags]

Did you use gfo?

 

[Stormhaven]

Did you use gfo?

Nope .
Vinegar dosing 45mls keeps the no3 in check .
I stopped rinsing mysis half the time and that's helped bring the p04 up

 

[Charlie’s Frags]

Carbon dosing, vinegar, also causes stn. Stop the vinegar and your corals will recover

 

[oldnsalty]

I would boost your alk level some too. Seems when I get that low or much above 9.5 I start to have problems.
Jeff