Our yellow tang died overnight. We've had it for over two years. He looked fine yesterday and this morning I found him dead on the bottom. All the other fish and corals look fine so I'm not sure what happened. He was full size when we got him two years ago so maybe just old age? I tested the water parameters and here's the following:
pH: 7.9 - usually 8.0 to 8.1 mid day when I usually check.
Alk: 9.8
Ca: 458
Mg: 1350
NH3: 0
Nitrite: 0
Nitrate: 77
Phosphate: 0.00 - was 0.19 yesterday with Hanna Checker. I upped the dosage of NoPOx yesterday from 1/2 recommended amount to 3/4 recommended amount and am not running GFO right now.
Temp: 77
Salinity: 1.027 - I know that's a little high. Usually keep 1.024 - 1.026
Tank is mixed reef and is just over 2 years old. In the past week I've made some changes as I have summers off and am working to get water parameters correct. Typically nitrate and phosphate are high and magnesium and calcium are low so I've done the following changes.
1. Dosing BRS calcium, magnesium and alkalinity with a Red Sea doser. I've been bringing up the parameters slowly so I don't think that's an issue.
2. Dosing live phytoplankton and Red Sea Reef Energy + (following manufacturer dosing schedule).
3. Dosing Red Sea NoPOx - dosing 1/2 of recommendations.
4. Added a chaeto fuge - dosed with Chaeto Gro for the first time yesterday. I got the chaeto from a trusted LFS and did a five minute dip before adding it. All the other fish are acting normal so I don't think there's an infection but who knows.
Water is a little yellow this morning so I added carbon in a filter bag to the baffle. I'm not going to dose NoPOx for a few days until the phosphate comes back. Maybe I added too much and created a bacterial bloom?
I'm new to the hobby (2 years experience) so any recommendations would be helpful.
pH: 7.9 - usually 8.0 to 8.1 mid day when I usually check.
Alk: 9.8
Ca: 458
Mg: 1350
NH3: 0
Nitrite: 0
Nitrate: 77
Phosphate: 0.00 - was 0.19 yesterday with Hanna Checker. I upped the dosage of NoPOx yesterday from 1/2 recommended amount to 3/4 recommended amount and am not running GFO right now.
Temp: 77
Salinity: 1.027 - I know that's a little high. Usually keep 1.024 - 1.026
Tank is mixed reef and is just over 2 years old. In the past week I've made some changes as I have summers off and am working to get water parameters correct. Typically nitrate and phosphate are high and magnesium and calcium are low so I've done the following changes.
1. Dosing BRS calcium, magnesium and alkalinity with a Red Sea doser. I've been bringing up the parameters slowly so I don't think that's an issue.
2. Dosing live phytoplankton and Red Sea Reef Energy + (following manufacturer dosing schedule).
3. Dosing Red Sea NoPOx - dosing 1/2 of recommendations.
4. Added a chaeto fuge - dosed with Chaeto Gro for the first time yesterday. I got the chaeto from a trusted LFS and did a five minute dip before adding it. All the other fish are acting normal so I don't think there's an infection but who knows.
Water is a little yellow this morning so I added carbon in a filter bag to the baffle. I'm not going to dose NoPOx for a few days until the phosphate comes back. Maybe I added too much and created a bacterial bloom?
I'm new to the hobby (2 years experience) so any recommendations would be helpful.