need help, cory catfisb keeps dying

[spiketooth]

every morning i will find one cory catfish dead, i started with 6 now i am down to 3. i dont know whats wrong. I have a 55 gal tank with a sv9000 filter, my ammo is 0, nitrite 0, nitrate 10, gh is 4-8, kh around 3, cl is 0 and ph is 7. I have cabomba plants with 10 black tetras, 10 red phantoms, 10 fork tail blue eyes, and 2 ottos. They all look like there doing good, eating swiming around. No bullying that i can see. I not going to get any more fish till i can find out whats.wrong. thank you

 

[Fishanatic]

You're filter is way too powerfull for that tank. Are you sure it's a Sirus Vortex 9000? It has 2377Gph O_O

 

[spiketooth]

No its a japanese filter power box sv9000. Its a 4 stage filter system and turns about 237 g/h. Forgot to say tank has been set up for 3 months now. Also us ada nature aquarium green brighty step 2

 

[Fishanatic]

No its a japanese filter power box sv9000. Its a 4 stage filter system and turns about 237 g/h. Forgot to say tank has been set up for 3 months now

237 is not enough for that size tank. I also recommend adding more gph power to the tank. At least 7-10 times to keep the tank in pristine condition. As for the fish, are you sure you didn't notice any medical issues when you got them?

 

[spiketooth]

Never seen or owned a cory cat fish until i read up on them. They just swim around the bottom looking for food, skin looked healthy. For substracts i have soil with sand on top for half the tank and gravel for the other half

 

[Fishanatic]

Never seen or owned a cory cat fish until i read up on them. They just swim around the bottom looking for food, skin looked healthy. For substracts i have soil with sand on top for half the tank and gravel for the other half

Might have gotten blocked in the filter. I suggest you check?

 

[spiketooth]

Blocked?

 

[Fishanatic]

I meant it might have gotten sucked in my the filter?

 

[spiketooth]

There too big to fit in the intake. Maybe they were sick and just didnt see it . Keep checking the water maybe i tested something wromg. Pick up another filter system. Will that
make the water current too fast for the tetras

 

[Fishanatic]

There too big to fit in the intake. Maybe they were sick and just didnt see it . Keep checking the water maybe i tested something wromg. Pick up another filter system. Will that
make the water current too fast for the tetras

Well, get a canister filter and arrange the flow direction to make sure it doesn't hit them

 

[spiketooth]

Thank you for the help. I got 2 corys then 4 for a total of 6 so if only 2 survives then i will have my anwser. Is there any kid of med i can give them? I rather not have anymore die then find that was thr anwser