Help with large favia slowly receding!

[Kammetal]

Hello i have had this favia for 2 years in the last year he has begun receding. He is in the middle of my tank lighting is 2 hydra 26hds. When i first got him he would puff up and have sweper tentacles. That does not happen anymore. Tested my water yesterday
Params

Ph 7.8
Ammonia 0
Nitrite 0
Nitrate 0

Alk was at 7.8dkh
Calcium was high at 490

This an old pic

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[mike werner]

I had the same issue with a similar looking fav.not sure what the exact problem was.when I started dosing aquaforest 3 part (component 123) it was back to normal in about 3 weeks.so it was probably a chemistry/trace element problem.plus all my corals look amazing now.great stuff imo.

 

[Kammetal]

I had the same issue with a similar looking fav.not sure what the exact problem was.when I started dosing aquaforest 3 part (component 123) it was back to normal in about 3 weeks.so it was probably a chemistry/trace element problem.plus all my corals look amazing now.great stuff imo.

Ok great currently im using ESV Bionic 2 part

 

[Kammetal]

Testedmy water

PH 7.8
Ammonia i belive is 0
Nitrate 5.0
Nitrite 0
Calc was a little hight at 490
Alk 8.4dkh

 

[John3]

Have you changed lights or light schedule? A slow recession to me is likely lighting or chemistry but your numbers seem alright. It would probably do better if nitrates were around 10 but many people run around 5 and are ok. Has there been a change in color over the recession timeframe?

 

[Kammetal]

Have you changed lights or light schedule? A slow recession to me is likely lighting or chemistry but your numbers seem alright. It would probably do better if nitrates were around 10 but many people run around 5 and are ok. Has there been a change in color over the recession timeframe?

No no color change. I have changed the light schedule a couple weeks back but nothing major. Im wondering if on of my fish is picking at it (Tangs). I may try to change its location. To the bottom of the tank

 

[Kammetal]

Here my API results. Disregard the first two

 

[John3]

Is it directly under a led light? Can you summarize your lighting change?

 

[mav3rick478]

Do you feed them directly or broadcast feed?

 

[Kammetal]

Do you feed them directly or broadcast feed?

I try to direct feed it but my fish take it all off before i can get it to eat.

 

[Kammetal]

Is it directly under a led light? Can you summarize your lighting change?

This is my lighting schedule lights don’t go past 80% when they peak. Some one said i may just need to move it into shade.

 

[John3]

80% but how much white light during peak power?

To give you an idea my white channel is only at 25% at peak power. My blue/violet/uv are at 100%. The intensity which is the overal power is at 70%.

When you hear about people frying corals with led lighting it’s because they have the white up too high. White led lighting is way more powerful than blue colored channels.

 

[Kammetal]

80% but how much white light during peak power?

To give you an idea my white channel is only at 25% at peak power. My blue/violet/uv are at 100%. The intensity which is the overal power is at 70%.

When you hear about people frying corals with led lighting it’s because they have the white up too high. White led lighting is way more powerful than blue colored channels.

Its at 20%. I have moved it to the lowest part of the tank. I Did some spot feeding now I have to figure out how to prevent my fish from picking the food off of it.

 

[reeferJMX]

OP,

My apology for resurrecting this old thread. I have the same situation with a Favia coral that I've purchased around March 2019. It is slowly receding and the receded parts are growing algae. It used to be in the middle of my tank (100 PAR), and then I've moved it to the lower part (50 PAR).

Any help is greatly appreciated.

PH 8
Ammonia 0
Nitrate 10
Nitrite 0
Calc 440
Alk 9.5 dkh
Mag 1500