One pale acro what issue

[epicurus84]

Well, i got one sps (see pic) that isn't doing too well. Well actually two but the other one ever did really well, and is brown (also when i bought it).

That coral isn't an issue for me. This one is.


Ive attached an image from may this year and a couple of days ago (the first time it went to this was about 1 month ago). The coral is about 7 months in the tank

The tank is now 9 months old (http://www.reefcentral.com/forums/showthread.php?t=2274721). I moved up from a smaller tank that was about 3 years old. Mainly lps corals.

Water parameters

Salt 32 promille (refractometer)
KH: 6.2
No3: 0
Po4: 0.02
CA: 380
MG: 1280

Lighting is done by two pacific sun tritron lights running bali program. I've run it at 75% for the last 6 months.

I'm carbon dosing. And i was using a phosphate remover. Since i tought i might be starving the corals i've stopped with the phosphate remover. Since than the phosphate did go up to 0.02 (from 0.00) in about 2 weeks.

Any idea's what might be the issue. I know the KH is a little lower then i want it. And also i'd like to get the water slightly more salted so all the parameters rise to the level's i'd like.

 

[AJReefs]

If 32 is your salt level I would try raising it to 35ppm and slow down on the carbon dosing just a little. By raising your salinity it should bring up your Alk/cal/mag. to right around 6.8-7.0/390/1300. I might try backing off the carbon dosing before I changed my salinity to see the effect it has on the corals.

The corals look really healthy; very nice my friend.

 

[trueblackpercula]

Well, i got one sps (see pic) that isn't doing too well. Well actually two but the other one ever did really well, and is brown (also when i bought it).

That coral isn't an issue for me. This one is.


Ive attached an image from may this year and a couple of days ago (the first time it went to this was about 1 month ago). The coral is about 7 months in the tank

The tank is now 9 months old (http://www.reefcentral.com/forums/showthread.php?t=2274721). I moved up from a smaller tank that was about 3 years old. Mainly lps corals.

Water parameters

Salt 32 promille (refractometer)
KH: 6.2
No3: 0
Po4: 0.02
CA: 380
MG: 1280

Lighting is done by two pacific sun tritron lights running bali program. I've run it at 75% for the last 6 months.

I'm carbon dosing. And i was using a phosphate remover. Since i tought i might be starving the corals i've stopped with the phosphate remover. Since than the phosphate did go up to 0.02 (from 0.00) in about 2 weeks.

Any idea's what might be the issue. I know the KH is a little lower then i want it. And also i'd like to get the water slightly more salted so all the parameters rise to the level's i'd like.

I had this problem and the carbon dosing is stripping the water as designed the gfo/carbon is stripping the water as designed and your using bio pellets and they are working as designed = too much too fast

I would stop one of them if not both until they recover then go back to one or the other. Your heart is in the right place but your stripping the nutrients that the Sps need too fast. Just slow it down a bit and see what happens. Also are you saying your Alk is less then 7.0 ? Other then that I think you will be fine as your Sps look happy.


Also I hope I am wrong but it looks like you have aefw on the yellow acro or it could just be pyolps that are retracted. Take close ups and please share.

 

[epicurus84]

Also I hope I am wrong but it looks like you have aefw on the yellow acro or it could just be pyolps that are retracted. Take close ups and please share.

It's the same acro. Because of reefcentral the picture is fairly low resolution. I'll look at the orignial because i think i see them too. (i haven't seen them in the reef yet).

I'll dip the coral anyway just to be sure.

Also i've stopped running GFO (wel something similair) about 1 month ago, the nutrients went up slowly. (ps i also think tool low nutrients are the problem).

edit:

i took a look at the original foto. And i'm not convinced it's AEFW, however i'm also not convinced i'ts not AEFW.

i've added a photo where you might see a AEFW

 

[Dapg8gt]

Are you running your alk that low on purpose? Cal and mag are a little low also but below 7 on your alk plus the ulns I believe is your issue..

Me personally would do as suggested above and raise the alk up to at least 7.5 and cal up to at least 400 and mag up to 1320(close to nsw) that combined with higher salinity along with letting some nutrients back into tank you should be golden..

All just my opinion but myself have noticed lower alk just causes brittle sps and lack of growth overall..

 

[epicurus84]

No i started (auto) dosing liquid refill about 1 month ago this should keep both CA, and KH in balance and stable.

Also since my salt is at 32 promille it will be close to 7 when i get up to 35 promille (as i would like).

at that point most values should be around 9% higher and better. But i agree i'm busy raising all values a bit.

 

[trueblackpercula]

Omg I am sorry I was correct that suers looks like them.

 

[epicurus84]

Well now it's only one (maybe two) corals. Thats way more easy to cure then my whole tank.

The strange thing is no coral has been added in the last couple of months, and the coral that has been added still looks as healthy as ever.

However i had one "problem" acro that was moved near it. And a frag of that acro also looks great (compared to the original).

I'll start dipping as soon as i get home.

 

[epicurus84]

The brown "flatworm" on the pic isn't a flatworm. But it's a strange looking polip. It was still there after 3 days.

However to take very precation i still dipped the coral and cut off some brances.

Also i'll start feeding the corals more often, and add some more fish. The first batch of fish is currently in quarantine. It's ready to go in about 3 weeks.

 

[trueblackpercula]

By the way I was recurring to the yell ow acro picture.

 

[epicurus84]

It's the same coral .


As said i still dipped and inspected it. It seems to be clean (i also fragged of some pieces to preserve the coral in case it dies).

 

[ormet]

I see no signs of AEFW in the pictures.

Also i have the same exact acropora (i think) and i have had it for over a year. Its very hard for me to get it to color up and keep it colored. The only time i have had it as yellow as your pic is when nutruents were very low, i fed corals alot and my parameters were rock solid at kH 7.5, ca 420 and mg 1320. It didnt last long tho

Oct 2012, bleached and starved:

3 months later, LED lit and better fed.

I have no more recent pics, but it just got better until my latest crash a month ago.

It has been very very hardy and never show sign of tissue loss or stn even tho it has gone through some rough times.
But on the other hand its not really a grower either...

 

[epicurus84]

I think it's the same one, i also got a blue one (it's really light browning blue) but that one look way more healty.

Mine went from the colour you have(last pic) to the bright yellow green in a few months. Grew a bit and then quite fast went to what it is now.