Retracted euphyllia frogspawn

[SvenB]

Since a few weeks my frogspawn is retracted.

I already moved it to a shady place with less flow, but it's still retracted.

Can someone help me?

Water parameters:

Temp. 26°c

Sal. 1.025

Ph. 8.2

No3. 3 ppm

No2. 0 ppm

No4. 0.04 ppm

KH 7

[farkwar]

That's not retracted

 

That's dead

[mcarroll]

On 11/4/2020 at 4:36 PM, SvenB said:

No3. 3 ppm

No4. PO4 (right?) 0.04 ppm

Nutrient levels are very low.

 

On 11/4/2020 at 4:36 PM, SvenB said:

KH 7

That is also on the low side....which is OK but leaves little room for error.

 

How old is the tank?  What else is living in there so far?

[paulsz]

On 11/4/2020 at 4:36 PM, SvenB said:

with less flow

was it in a high flow spot before that? how long was it there for?

[SvenB]

On 11/18/2020 at 3:36 AM, mcarroll said:

Nutrient levels are very low.

 

That is also on the low side....which is OK but leaves little room for error.

 

How old is the tank?  What else is living in there so far?

Indeed PO4.

 

The tank is 5 months old. I only have 1 clownfish and a couple of zoa's and acan's.

[SvenB]

On 11/18/2020 at 3:42 AM, paulsz said:

was it in a high flow spot before that? how long was it there for?

It was in a medium flow spot for 1 month.

I only have it for 2 months.

[mcarroll]

3 hours ago, SvenB said:

Indeed PO4.

 

The tank is 5 months old. I only have 1 clownfish and a couple of zoa's and acan's.

If possible, do less to clean and filter the tank.

[SvenB]

6 hours ago, mcarroll said:

If possible, do less to clean and filter the tank.

What are the perfect po4 and no3 numbers for euphyllia?

[mcarroll]

There is no ideal per se.  They do better with "more" vs "less", at least when less is approaching zero.

 

Check out this article about Euphillia: Phosphate deficiency promotes coral bleaching and is reflected by the ultrastructure of symbiotic dinoflagellates

Here's the main image from the article "LP" = low phosphates; "HN" = high nitrates.   Click and read for the whole scoop!