Reef Central Online Community

Go Back   Reef Central Online Community > Coral Forums > LPS Keepers
Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Unread 09/22/2018, 11:14 AM   #1
t1a1c1h
Registered Member
 
t1a1c1h's Avatar
 
Join Date: Jan 2016
Location: Birmingham
Posts: 31
Duncan coral dying

We have a large-ish (25 or so heads) long tentacled green duncan coral in our mixed reef that has recently gine from being fully open, taking food from a pipette ans growing fast to being almost entirely dead with now only 3 live heads! This has happened over maybe 3 weeks despite our attempts to help with iodine based dips which we have used with good effect on other lps in the past. No signs of injury, not near anything that stings, no coral eating fish or inverts in the tank, nor any infections or pollutants (we are aware of at least). The heads detach from the skeleton then drift off around the tank then melt away. Our tank parameters have fluctuated a bit thanks to a dodgy batch of alk supplement and over dosing of iodine but everything else Is recovering including acros, monti, acans and softies. Are Duncan's particularly sensitive to alk or iodine? Or could it be something else we're not checking? Params are now stable nitrates 10, phos 0, alk 160, ca 400, mg 1250, iodine 'normal', iron 'normal', ph 8.2 temp 24.6, no changes to lighting, flow or position in the tank. TIA.


t1a1c1h is offline   Reply With Quote
Unread 09/23/2018, 08:20 AM   #2
krs1102
Registered Member
 
Join Date: Jul 2015
Posts: 60
In my (admittedly limited) experience, Duncans seem to hate change. So, fluctuating parameters could be the cause of these issues. How do the 3 live heads look now?
Your numbers look mostly fine (Ca and Phos could be a little higher), but I would suspect that the bad supplement might have led to these issues.


krs1102 is offline   Reply With Quote
Unread 09/24/2018, 07:32 PM   #3
Uncle99
Crab Free Zone
 
Uncle99's Avatar
 
Join Date: Sep 2017
Location: Ontario, Canada
Posts: 2,906
What exactly is normal iodine?
I trust you mean iodide?
Over dosing iodine is non forgiving....iodide in the range .03-.06 is the max you can use.
What is dodgy Alk....again an Alk spike is non forgiving..

How long has your DT been running?
How long has the Dunc, been in the tank?


Uncle99 is offline   Reply With Quote
Unread 09/25/2018, 07:25 AM   #4
t1a1c1h
Registered Member
 
t1a1c1h's Avatar
 
Join Date: Jan 2016
Location: Birmingham
Posts: 31
Tank has been running nearly 3 years, duncan been in it for about 9 months. We started dosing salifert natural iodine when a load of plating montiporas sloughed their skin off about a year ago, testing regularly as we know it can be problematic, solved the skin loss issue. Current level is 'normal' on the test kit as opposed to 'low', 'high' or 'very high'. The dosing error came from putting the tubes in the wrong bottles so iodine was dosed at alk rate and vice versa.... fatal error it seems but we're only human at the end of the day and mistakes unfortunately do happen.


t1a1c1h is offline   Reply With Quote
Reply

Tags
duncan, dying coral, lps

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -6. The time now is 03:35 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright ©1999-2022
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.