SPS frag size related to mortality rate?

[Lionfish hunter]

What is everyone’s thoughts on the size of an SPS frag being an indicator of its chance of surviving in an artificial reef environment? I ask because I recently lost this small Green Slimer to an STN event despite keeping stable conditions for the longest time now and having a mature over 2 year old reef tank.

Temp: 78
Salinity: 1.025
pH: 7.8-8.3
NO3: 0-2
PO4: 0.03
Alk: 8-9
Cal: 400
Mag: 1350

I know people will say I have too low of nutrients to which the only thing I can say is I feed heavy and often flakes, pellets and frozen, I have a fairly heavy bioload with a good number of fish and I have other SPS which are doing fine.

Ive found the large frags/ colonies are the most likely to die followed by the real small frags. The frags that don’t have good color when I buy them also don’t have a great survival rate.

 

[HudsonReefer2.0]

just a frag that didn’t make it. System seems fine and stable from ur post. I have this growing just to see and it’s encrusting. I’d try again. It’s a hardy and available frag.

Still going. Don’t mind algae. Lol.

 

[CBonito]

Only way I consider purchasing sps.

Agreed. Nothing twists me up more than paying 150 bucks for a little acropora nipple.