Need Help: Thousand Island Stingray Not Active and Not Eating

  • We are currently upgrading MFK. thanks! -neo
Alright guys in my humble opinion, the bickering is unnecessary. Take the advice and check the back and forth so as a community we can assist an aquarist and an animal in need. I believe they are correct in saying you need more filtration and maybe more water changes and please post your water parameters.

Advice can be taken if its given with some sensitivity. Not by saying that if you don't do what I am saying your pet won't survive the next two days.
 
I think you may be looking at the numbers a little incorrectly. The FX6 is rated to turn water over around 900 gallons per hour. It is advertised to be adequate for up to a 400 gallon tank. Of course this number is generally believed to be without any media present in the canister so it is probably considerably less when working properly.
That being said and I am not an expert on your fish but your tanks water does not look healthy. It may just be the lighting but it looks cloudy. I think if you would like a better assessment of the situation you should give us all of the API test results especially nitrates. Those are two fish from what I have read here produce copious amounts of nitrates. Your Filtration does not take nitrates out of the tank.

That being said I have a 150 gallon tank and I run two Eheim 2217 and one FX6. I believe that equates to about 9x turnover of the water. Less considering the media.

Fair point!
 
Advice can be taken if its given with some sensitivity. Not by saying that if you don't do what I am saying your pet won't survive the next two days.
I’m am being as sensitive as possible. Bracing you for the cold, harsh, near coming truth.
 
I think it is unfortunate that you came here asking for help and then seemingly disappeared. From what I can observe with the very limited information you have provided :

Your tank dimensions are too small for those fish

The bio load exceeds your current maintenance schedule

You have two large fish in a 100 gallon tank where the water is already 25% below full and then don’t change the water for several weeks.

I would suggest doing 50% water changes daily until nitrate levels come down. I am guessing they are high.

Best of luck to you. Those fish look to be nice specimens. I hope they survive.
 
Look at how much you are feeding over 2 weeks and understand how much waste is in the closed system.
 
I agree with your filtration is inadequete. On an 6x2x2 tank i have with two small raypups and an pregnant female i have a sump running 3000L/h through 25-30L of k1 then i have one eheim 2262 filled to the brim with 20L of bioballs. On another 6x2x2 tank with one 40cm ray male in thats on time out from the females i have a showerfilter with aprox 70L of biomedia running 6000L/h hour through it and one eheim 2280 filled with biomedia and chaning water twice a week in those tanks by 80%.

When not changing water for some time your ph will drop due to the water getting bad. And when you change water your ph will quickly rise and that can kill an fish. Esp an ray. Trust me ive done that mistake once some years ago. If i where you i would upgrade both the tank and the filtration asap.

Oh and by the way farms and some stores will tell you things are enough to sell more fish. An fx6 to a large ray and an arowana is way wrong. I use one fx6 on a tank half the size as yours with 11 geophagus im growing out and they are prob around 15cm right now.
 
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API test kit pH only goes down to 6 so if you're getting a reading of 6 it might actually be way below 6.

Nitrification is going to be quite slow at these low pH levels which may partially or completely explain your persistent ammonia readings.
 
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