Torch coral turning brown

[carlrix]

Hi,

My torch coral has turned brown. Nitrate levels 5-10ppm, ph 7.8, Ca 350ppm, Mg 1110ppm, salinity 1.025 and temp is 25.2. I have a Zet light LED System on for 8 hours per day.

Any suggestions on possible cause?

 

[trad]

Probably excess nutrients with the information you have supplied.

That's probably the case if you're also struggling with algae.

 

[viper357]

Is it slimy? If so it could be Brown Jelly disease.

Do you test your alkalinity? Your CA and MG are a tad on the low side and could do with topping up, but not a major cause for concern.

Having said that, it could just be normal zooxanthellae, which is a good thing if the coral was slightly bleached. Any chance of a pic?

 

[carlrix]

Hi

Attached is a photo I took this morning of the torch coral, it does appear to be making a comeback as I have been dosing with Ca and Mg recently. The tank properties are as follows:

400litre
Ca = 480ppm
Mg = 1410ppm
Nitrates = 25ppm(still struggling to get this below 25ppm but has improved with reduced feeding)
Ammonia = 0.2ppm
Salinity = 1.025
pH = 8.1
KH = 10.2
Alkalinity = 3.6

Currently doing a 20% water change every 14 days.

My hammer coral is not doing well at all and has almost totally disappeared.

Any advice would be much appreciated

 

[459b]

Can you post pic of the hammer?
Torch looks ok. Nutrients are perhaps a bit high. What filtration are you running?