Acans receding - looking for suggestions on possible causes

[gregzz4]

Bye the way, thanks for the input guys

So, anyone have any other thoughts on why my acans decided to recede ? Just a random head here and there
One colony has shrunk 50% around the ring - as in from 1 to 8 o'clock, another the head just vanished, and a third is going from the outside-in
Nothing the same between the 3 different corals

They were dipped and inspected last friday and nothing showed up in the dip water
Plus, the dip gave no improvement

[gregzz4]

I'm bumping this up for the night as I missed the cut-off for 'new posts' and am still looking for some help

[Din Gior]

Did you try to feed you corals, not just fish?

[gregzz4]

Originally Posted by Din Gior

Did you try to feed you corals, not just fish?

I'm not spot feeding as I found the corals won't hold onto what I give them
I tried chopped mysis, brine and then cyclopeeze
Only the cyclops were taken in, but they also eat it when it's just dumped in
So, I stopped trying to spot feed

I'm adding coral vitalizer daily while the return pump is still on ( probably some of it is being wasted, but I don't like turning off my return as it upsets the balance in my chaeto tank )
I feed coral frenzy 2-3 times per week, and turn the pump off for 15mins
Last night, for the first time, I fed powdered phyto, and 15mins off
I'll probably feed the phyto at the same time as the frenzy

[gregzz4]

Well, it looks like we're going to lose all 3 of our aussie acans
The recession has sped up a bit and I estimate that they'll all be gone in another week

The ONLY other thing I've changed lately is;
I was using GFO from Chin Lee's group buy last summer. It ran out, so now I'm using BRS hi cap

I'm going to do a 15% WC tomorrow and I guess I'll cross my fingers ...

[Zoaelite]

Originally Posted by gregzz4

Because my corals were starting to bleach due to a lack of zooxanthellae, I took a suggestion and cut about 8 hours of T5s out of the day, and currently am running 12 hours of blue plus, and 9 hours of 14k coral lite 2 next gen

Could you please clarify your lighting & the schedule its on? When you say you cut 8 hours of T5/ day do you mean you were running your lights @ 20h/day?

[gregzz4]

Originally Posted by Zoaelite

Could you please clarify your lighting & the schedule its on? When you say you cut 8 hours of T5/ day do you mean you were running your lights @ 20h/day?

8X54w ATI Powermodule

Originally;
2 Blue plus 11am-11pm
2 Coral II 14K 12pm-9pm
2 Coral 10K 12pm-6pm
1 Coral II and one Fiji Pink 2pm-4pm

I turned off the 10ks and the Coral II Fiji pair, but the recession started before this

Besides the change in the GFO source, the biggest thing I've done lately is the nearly-doubled fish food amount

No changes in location of acans, flow, lighting, husbandry etc before the recession started
Just the addition of coral frenzy 2-3 times/week, mixed in a cup of RO and poured into the tank in front of an MP10 with the return pump off for 15mins

No new fish, inverts etc
A new turaki, pink birdsnest, favia and green slimer, but not added anywhere near the acans. New corals were dipped in Revive and rinsed before attaching with Ecotech Coral Glue

Skimmer cup is cleaned once a week, socks are changed once a week

Param refresher;
79f Callibrated against numerous thermos
1.025 Sg Callibrated last week
pH 8-8.15 Callibrated 2 weeks ago
Alk 7-7.5 Elos
Ca 410 Elos
Mag 1350 Elos
Potassium 3-400 Elos
NH3/4 zero Ammo badge and Elos
NO2 zero Seachem
NO3 zero Seachem
PO4 0.04 Hanna

Equip;
2 part dosers
Tunze ATO zero TDS RO
Same Carbon since last june
BRS HC GFO

I just tested for voltage with a Fluke 334 ( $250 meter );
0.00volts

Only the aussie acans are dying
The rest of the softies, LPS and SPS, and the bubble tip, are either unchanged, or are starting to color back up
No weird fish or invert indications .... nadda for signs besides some increased HA after the addition of the extra foods. And we lost one lettuce nudi that melted away in the tank. The other 3 nudis are still eating away and getting bigger

Couldn't be the rotted nudi, could it ????

I'm racking my brain for anything else

[gregzz4]

Oh, the other thing that's changed is I stopped the wild Alk and Ca swings when I added dosing pumps on Feb 9th

Tonight my test results are;
7-7.5
4-410

My other acans are still doing very well

I'm going to go back to my original WC routine ... I can't think of any other changes