Scroll coral bleaching

[Aidanwolf]

Hello I noticed my scroll coral has started to bleach.I am not sure why ,my parameters seem fine. The photo was from a couple of days ago and it has only gotten worse. Here are my parameters.
Refractometer
Salinity:1.26
Used Salifert tests for these.
Mg:1400
Ca:430 ppm
Alk:7.6
And the API tests for these, so probably not super accurate.
Ammonia:0
Nitrite:0
Nitrate:0
Phosphate:0

 

[najer]

How long has it been in that spot?
Corals need nitrates and phosphates as well so zero concerns me.

 

[Aidanwolf]

How long has it been in that spot?
Corals need nitrates and phosphates as well so zero concerns me.

It has been in that spot for about six months. I dont believe it is exactly zero because the Api tests are not super accurate.

 

[najer]

It has been in that spot for about six months. I dont believe it is exactly zero because the Api tests are not super accurate.

Can you get your nitrates and phosphates tested at a lfs or by a friend, they are quite important for the whole system, I would rather deal with high rather than low?

 

[Aidanwolf]

Can you get your nitrates and phosphates tested at a lfs or by a friend, they are quite important for the whole system, I would rather deal with high rather than low?

I will probably get a kit for them after the holidays some time. There isn't any local hobbyists near me or stores. Wouldn't the Api test be accurate enough to guess whether they are to low or not?

 

[najer]

I will probably get a kit for them after the holidays some time. There isn't any local hobbyists near me or stores. Wouldn't the Api test be accurate enough to guess whether they are to low or not?

API kits are not favoured by a lot of hobbiests. Salifert are a good base line kits, I don't really test much, when I do it is Salifert!