Acans receding - looking for suggestions on possible causes

[Din Gior]

If you will look on ULNS, you will notice near bleached pale colors and opposite system with higher phosphates and nitrates has darker colors. I'm not sure if it's the case, but potentially you can bleach you corals if they are not getting enough nutrients.

[jorjef]

I would suggest a strictly SPS tank for you. LPS, in general require a little more lax approach to water conditions than I think you're use to. I would also suggest your Alk is a little on the low side. Maybe adding all those food suppléments is a short time frame has sent the water conditions yo-yoing too much.

[gregzz4]

Originally Posted by jorjef

I would suggest a strictly SPS tank for you. LPS, in general require a little more lax approach to water conditions than I think you're use to. I would also suggest your Alk is a little on the low side. Maybe adding all those food suppléments is a short time frame has sent the water conditions yo-yoing too much.

I understand there is sometimes a bit of a balance to keep SPS and LPS together, parameter wise

The food supplements weren't added right off, but a couple weeks after the fish food was doubled. The biggest noticable change colorwise was after upping the fish food - to the good. This is why the coral foods were started
I have some come-back of HA, but nothing unmanageable

I've upped my dosing timers to increase my Alk and Ca a bit as raising the KH was suggested by another just a day or two ago. I'm going to try and target up to 8dkh and see what the Ca does. Hopefully it will be easy enough to get it stable in the 420ish range

[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]

Originally Posted by Din Gior

but potentially you can bleach you corals if they are not getting enough nutrients.

Yup, this is the path they have taken, we think