My rays are all dying :(

  • We are currently upgrading MFK. thanks! -neo
DB junkie said:
Sorry for what you're going through......

Do you have a way to check TDS? Probably nothing, but could be something? Should be able to find someone local into reefs that could help you get a reading if you don't have means.

How long since the canisters have been cleaned?

How big is the tank/sump?
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No, I don't have any way to check TDS and I'm not really hooked into the local reef community. Even if it's high, I doubt that's the cause-- it wouldn't explain such a drastic change so quickly.

The tank is a 5x3x20"= 187 gallons. None of the rays were large at all, so I thought I was ok on space for a bit longer. It's been about a month since I did canister maintenance.
 
Ph of water change water and tank water? Other than that I would prazi and salt blindly and hope for the best it is probably better than nothing at this point

I would also start aging the water for the water changes if you are not already. This should help with any issues you might be having from the source water
 
Tank temp? Are any aerosols being used in the house (room air fresheners/oven cleaner). Heated fragrance oils? Before the losses began did anyone do any house cleaning (spray cleaners, furniture polish, etc.)? Is anyone smoking in the house? All these can contribute to a sudden toxicity reaction in an aquarium.
 
johno27 said:
Ph of water change water and tank water? Other than that I would prazi and salt blindly and hope for the best it is probably better than nothing at this point

I would also start aging the water for the water changes if you are not already. This should help with any issues you might be having from the source water
Click to expand...

Do you age your water before doing water changes or add anything like Prime? What does the underside of the dead ray look like? It seems like there is something wrong with your source water for the rays to react so quickly - especially with changing half the volume of water at one time. Try smaller water changes more often. I change 15% every second day.
 
Any old carbon in your system? Could be leaching back into the water column.

And if n03 is too high it will stress the rays causing negative effects!

As long as you test your water and are 100% certain you have zero nitrite/ammonia and nitrates under 70-80ppm then its could be desease or contaminants.

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Tank temp is around 81 F. We do use glade air freshener on occasion, but not near the tank. No old carbon in the system. Nothing remarkable about the appearance of the dead rays. My best guess is that I've either got some kind of infectious disease that's spread among the rays or something has changed about my source water. I realize that the first place to look is always at water chemistry, but I don't think that's the case here. The only water chemistry issue I have is borderline high nitrates. That might explain the death of a single ray, but I don't think it can account for such a quick downturn in tank health.
 
Clean the canisters filters and get everything going. Do what you can to save them

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Did you check if there is any stray current coming from the pumps or heaters..dont know if that's an issue in saltwater, but has been known to cause problems with saltwater sharks and rays
 
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