HELP. Nitrate spike

[Mike7744]

I have a 75 gal 19 months old aquarium.
I just did a 20% water change. And decided to test my water. My Nitrate it very high.
I have a Fowler predator tank. I feed frozen krill to the fish by hand.
Not sure why my levels are so elevated.

Magnesium MG-1275
Phosphate Po4-2.5
Ammonia NH3/NH4 - 0
Nitrite NO2- .2
Nitrate No3-50
PH- 8.0
Alkalinity dkH - 10.6
Calcium- 522

I run a bubble magus curve 5
And Biopellets, carbon reactor.
Filter floss changed every 3 day

Any ideas on what i can do to lower this?
Thanks

 

[Mike7744]

Bump

 

[Dan_P]

I have a 75 gal 19 months old aquarium.
I just did a 20% water change. And decided to test my water. My Nitrate it very high.
I have a Fowler predator tank. I feed frozen krill to the fish by hand.
Not sure why my levels are so elevated.

Magnesium MG-1275
Phosphate Po4-2.5
Ammonia NH3/NH4 - 0
Nitrite NO2- .2
Nitrate No3-50
PH- 8.0
Alkalinity dkH - 10.6
Calcium- 522

I run a bubble magus curve 5
And Biopellets, carbon reactor.
Filter floss changed every 3 day

Any ideas on what i can do to lower this?
Thanks

If nitrite is actually 0.2 ppm, this will increase the nitrate you measure. Nitrate might not be a problem.

 

[Mike7744]

Ok

If nitrite is actually 0.2 ppm, this will increase the nitrate you measure. Nitrate might not be a problem.

, so 50 nitrate is ok?

 

[Dan_P]

Ok

, so 50 nitrate is ok?

Is it really 50 ppm? It might be tested lower if nitrite wasn’t present.

As for its effect on fish or soft coral, I doubt the fish care. I think you reported no issues with the soft corals

 

[Mike7744]

I don't have any corals. I will retest maby it was testing error.
I use RedSea tests

 

[Mike7744]

Just tested again, it still reads 50.