Issues with digitatas

[Velcro]

The last few digitatas that I have gotten seem to do this. Polyp retraction in an area that kind of spreads while at the same time the skin starts to look like it is alk burned.

I cannot seem to see any pests.

SG- 1.026
pH- 8.3-8.4
Alk- 6.9-7.3
Ca- 440
Mag- 1400
Temp- 78
NO3- 3-5ppm
PO4- 0.00 (via hanna, but I'm not running GFO. Just chaeto)

 

[Ocelaris]

What's you're light like? Any algae issues? Mine retracts sometimes if I get Dinos on it, but never seen that issue unless something was physically touching it.

 

[kevantheman35]

If the tissue damage is near the base I would take a real hard look for monti eating nudis. They can be very small. I lost all my digis and caps to those guys last year

 

[ReeferMaddness843]

Curious on light too. I've got a bubblegum in pretty high light that shows good PE and growth. However have a brown digi in low light that grows but has next to no PE. Made the adaptation in tank transfer today so we shall see

 

[Velcro]

it's around 200 par in that location. 8 bulb ATI T5 with 2x 12" build my LED actinics on a 30x30x24" cube. I have acros in the same place that are thriving with excellent polyp extension.

 

[Velcro]

NEVERMIND BOYS: WE FIGURED IT OUT.

 

[ReeferMaddness843]

Nudi?

 

[Velcro]

yup

 

[kevantheman35]

Called it lol

 

[Velcro]

Called it lol

You sure did. I'm not taking any drastic measures since I have few montipora. I dipped the digi and got the little **** off. Been checking every night with a flashlight and haven't seen another though I'm sure there are eggs. Worst case I'll pull all the montipora and go without for a few months.

My acros are in a really good place right now so I just don't want to disturb the tank.