Possible Pathogen Based Acro Necrosis

[Kip]

aquaticman74.... it was in a post a coupla pages back... but here is a chronologoical summary of possibly significant events

1) Jan- 07=received a wildAC acro frag that necrosed in my frag tank no matter how many baths or how many times i fragged and remounted it

2) Mar 20, 07=started running low dose o3

3) Mar-07=started mixing in red sea pro salt at 25:75 to IO (have stopped a month ago)

4) Mar-07=used gen-x schuran style media as my substrate

5) Apr-07=started running high dose UV in the frag tank

 

[Kip]

<a href=showthread.php?s=&postid=10021521#post10021521 target=_blank>Originally posted</a> by CAreefer
I would have to lean against the salt (I'm TMPR) and water supply personally, as I'm on the other side of the country. Leaving seasonal change and back to the original topic, pathogen based. I'm going to be the control and leave status quo and maintain husbandry as is and see where things go. I have healthy frags from all afflicted pieces doing well in frag tank, so really nothing to lose other than large colonies, but no pieces. Other than the occasional RTN of a branch or two, mine seems to have stabilized somewhat, and remains solely with the acro species.

CAReefer

very interesting ... sounds like your problems parallel mine

please stay in touch with updates

 

[Zoom]

<a href=showthread.php?s=&postid=10021545#post10021545 target=_blank>Originally posted</a> by Kip
Zoom... its a shallow bed of 1-2" .... it is a high flow tank so most stuff stays suspended for the skimmer to get. The sand bed is constantly shifted around. In fact, i shifted a lot of it toward the back when i put the rubble bottom in ~march this year. (gen-x c-reactor media)... i'd think that for a sand bed to manifest itself as a problem one would need to see an on-going problem with organics, po4, and/or no3. Have you a bit more info on this i should consider?

Can you check for P04 in the sand you can get some sand from the back of the tank . Be sure you get enough you can siphon some out to a small container and let it sit after you stir it up for a little, wait one hour and check . Looks like everything else is in check.

 

[Kip]

i will do that sand po4 test... probably tomorrow

 

[Zoom]

<a href=showthread.php?s=&postid=10021707#post10021707 target=_blank>Originally posted</a> by Kip
i will do that sand po4 test... probably tomorrow

You need to get the sand and all the dirt with it. I use a rigid pipe and hose to siphon it.

 

[wentreefgirl]

Ok, so now that others have posted pics, heres mine.
My porites

This bleached instead of rtn'd. now getting green again.

And this is weird. Is supposed to be teal with blue polyps. Bleached and now look what color is coming.

 

[Infinitereef]

I am following this with interest. I have the same issue. It is jumping from one colony to another. I never see 2 or more STN at the same time. Lost one big colony totally 2 months ago, and the 2nd colony is almost gone. Even the Frags from the colony also STN .

I have tried 2 different Salifert Alk test kits at the same time. They seem to have 1 dkh difference. Not sure which one to trust.

 

[BreadmanMike]

What's your ORP at?
Did you cure the Gen-X media before adding it?

Sorry if you already answered these, but I can't remember reading them.

 

[Kip]

ORP is around 350

i am only dosing 25/hr on a 450gTSV setup

didnt cure the gen-x media, but i did soak/rinse in ro water before putting it in the tank (even though it said pre-rinsed)

regardless... my issues date back before o3 or gen-x entered the equation

 

[CAreefer]

Re: CAReefer

Re: CAReefer

<a href=showthread.php?s=&postid=10021524#post10021524 target=_blank>Originally posted</a> by Zoom
How old is the sand bad ? Did you ever partially clean it ?

Sand went in when the tank was set up, Jan 04. 1-3" deep. Like Kip's, the front is contstantly being moved around and redistributed. The back half or so has been undisturbed since day one. I've done some minor vacuuming in the areas that I can reach, but nothing major. I just can't bring myself to remove 250+ lbs of live rock to vacuum the sand.

<a href=showthread.php?s=&postid=10021524#post10021524 target=_blank>Originally posted</a> by Kip very interesting ... sounds like your problems parallel mine

please stay in touch with updates

I will certainly let you know how things go.

CAReefer

 

[gasman059]

Hey Kip any luck with the doxy?

 

[Kip]

will be tuesday before i can do some med tests

 

[gasman059]

<a href=showthread.php?s=&postid=10023415#post10023415 target=_blank>Originally posted</a> by Kip
will be tuesday before i can do some med tests

good luck I will be following!

 

[slojmn]

Wow, following this thread makes me bummed for all the issues everyone that has posted is having . Kip and others, I sure hope you all figure this out and get to some recovery rather than losses. Good luck

 

[Ventralis321]

You know i had that exact same problem when i bought an RO/DI unit and was using that water instead of my tap water. My tap is very clean except for silica which i wanted to lower. Within the first week my colonies were doing the exact same thing as all of yours. Receeding at the base and rtning from odd spots. I know it sounds funny but maybe someone should check the RO/DI water maybe there is a bad batch of filtration media in it. Carbon? or DI?

 

[MJAnderson]

Just curious after speaking with another reefer locally who is having the same problem --- has anyone else had a ton of snail deaths? I've been finding mine on the sand on their back still in the shell but not moving. When this first started I lost about 1/4 of my snails in two weeks. When the corals first started going bad I thought the mass snail die off had caused a spike but I tested for everything I could find and nothing. I didn't really think about it until I was talking to someone else today and they mentioned their coral and snail loss.

Just curious.

As for RO/DI I use the Typhoon III from Air, Water Ice. Been up and running for 11 months since I started my tank. TDS is still 0 and haven't changed any filters yet. Carbon unit should be good for 3650g of water (10g a day for a year) and I've made maybe 1/3 of that.

 

[tylorarm]

Does your local water use chloramine? It's much more stable and difficult to get out of the water than chlorine. More areas are using this all the time. I was just talking to the Filter Guys friday and he convinced me to add a second carbon that better ensures it's removed.

 

[CAreefer]

One thing I noticed today while working with some of the affected pieces is that the slime coating on the acros has been weakened dramatically. Within a minute or two of removing the piece from the tank, the tissue is completely dried out. What's it all mean? It's beyond me, but I thought worth mentioning and was wondering if it was a commonality.

CAReefer

 

[Infinitereef]

My snails is all doing well. I did dip with Betadine on the affected colony on Sat. Will update on how it goes....

 

[Kip]

chloramines... the typhoon III has dual carbon prefilters after the sediment filter

slime missing... someone else herein (i think) mentioned corals losing their shiny appearance

snails... i've not noticed that problem, but i dont snail inventory very often

betadyne dip (which i think is similar to the TMProCC dip)... the two i did on sat morning have browned a lot.... i dont know if the recession areas have progressed because i fragged the ill areas away. Now... just waiting to see if recession/thinning of tissue starts to appear somewhere else.