Torch corals dying?

Frankie_Marble

New member
Hello. I'm having a problem with my torch corals. Already lost a gold torch, now on my green one, one of the heads receaded & my pink one isn't looking good at all.

Tank parameters :
Nuvo 40
Weekly water changes 5g (coral pro)
Temp = 78.1
Sg = 1.025
PH = 8.1
Ammonia = 0
NO2 = 0
NO3 = 5-10ppm
PO4 = < 0.025

Mg = 1500
KH = 8.1 dkh
Ca = 450

Placement is in bottom half of tank, with medium flow.

They were doing amazing for a few weeks & next thing I know they are all messed up. Everything else in the system is doing well. Good color, polyp extension. I dont get it.

I was thinking I'm changing too much water every week? Is that possible? Maybe I need to let the nutrients build up a bit. Help! Please


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