Marble breathing heavy, not eating

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Zbosco13

Exodon
MFK Member
Feb 8, 2016
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Grand Rapids, MI
OK MFK stingray experts, I need your help here.

I have an 8" Mini Marble, little over a year old in my 125 gal, stocked with a 6" green sev, 4" red sev, 4" geo, and 4" discus. Normally voracious, pounces food with enthusiasm, always surfing the walls, splashing at the surface, climbing the driftwood, etc.

On Saturday I did a ~55% water change and filter cleaning. Parameters before WC 7.4 pH, 0/0/18ish Ammonia/NO2/NO3. Parameters after 7.4 / 0 / 0 / 8ish. WC was straight tap treated with Prime and stress coat+, same as I have been for the past year.
During the water change I swapped out about half the media in my Fluval 406 and rinsed out some of the sand in the bottom. This may possibly be important later. Then, while changing out some of the media on my big eheim canister, the handle broke on me, rendering the filter inoperable. My thought was, no big deal, I would run out on sunday morning and grab a new one, as that one was on its last legs anyway.
Sunday morning comes, and my ray is much less active than normal, mostly sitting on the bottom, and breathing heavily. Using both spiracles, but much heavier breathing than normal. Then she refuses her first feeding of the day, which has never happened before. As the day goes on, she gets more active, starting to surf the walls and cruise around a little more. Still breathing somewhat heavily, but not as much as before. I run out and install a new FX6 by midday, and seeded with BB.
As of sunday evening, still breathing a bit harder than normal, but less so than earlier, but refuses evening feeding attempts as well (severums rejoice).
Come this morning, same story, still breathing a bit more heavily than normal, and refusing feeding. Last night she was also picking up the front of her disc, almost like she couln't catch her breath, if that makes sense. My wife also says she seems a bit paler than normal. No signs of any physical trauma, fungus, bacteria, anything like that.

My only guess is that when i switched out the media and dropped my filtration when the filter broke, there was a big ammonia spike overnight that she is reacting to? Water parameters were identical today to sunday morning at 7.4/0/0/8ish.

Below are pics of water params, and what she looked like 2 weeks ago, and video of her behavior sunday night vs this morning. If any of you stingray keepers out there have any advice or insight as to what the problem is and how to fix it, I would greatly appreciate your help!

TIA,
ZB



unnamed.jpg parameters 1:9:17.jpg
 
Cleaning the Filter,water change,sand cleaning
at the same time is not a good idea.
I guess you have killed to much bio in your tank.
I would do several water changes and keep a close
eye at your water parameters.
 
I am no stingray expert... however, if I were in your shoes I would have added some Seachem Stability for a few days to safeguard against the tank going through a mini cycle
 
Cleaning the Filter,water change,sand cleaning
at the same time is not a good idea.
I guess you have killed to much bio in your tank.
I would do several water changes and keep a close
eye at your water parameters.

yeah, thats my initial thought. definitely didnt intend to change half my media and switch out an established filter for a brand new one on the same day.
 
I wonder if the filter was down, the circulation in the tank was too low and lowered the dissolved oxygen compounding the problems. Might help account for heavy breathing. Just a thought anyway.
 
Good news is she is now pounding food again. The two Severums have started pestering her in the last couple days so I think the water parameter change, BB loss, and the fish bothering her stressed her out. The severums will be moving out tonight.
 
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