Zoa Help!!! Ongoing troubles for months on end

onetootreefor

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Hey Guys,

I have had some terrible luck with zoa's in the last 3-4 months. To give a little background I started my tank in feburary of 2014.

Equipment:
JBJ Rimless 30Gal with everything in the back
2 return powerhead pumps with some extenders in front of the tank to help navigate flow
An additional Hydor powerhead
Kessil A360WE 8.5 inches off the water max 85% intensity and 40% color
Hydor nano Slim Skim skimmer
Hydor ATO (using fresh water to top off, no lid so I do get a bit of evaporation)

I started noticing some of my oldest zoa's closing up and not opening fully about 4 months ago.

Eventually it spread and all my zoas started reacting the same, skirts becoming very short and the heads are not opening fully just barely enough to see the center of the zoas
The zoa's are spread across the tank from left to right and from top to bottom and they are all acting the same.

Roughly about the same time I noticed my coraline that has been there from day one started turning white and dying.

I immediately get to my LFS and start asking questions. I test regularly about twice a month an my tests usually come back normal and average (more on that later). When I went to LFS about 2 months ago they tested my water and determined my ALK and PH were both low. They got me on a slow path to increase it with some Alk Buffer. Within a few weeks alk and PH both balanced out.

In the last month I started testing heavy every 2 days and doing 20% water changes every week like clock work. I will post my last week's of test results below. All my other coral seems to be doing fine. I have a butt load of acans and chalices that are growing and showing nice color. My frog spawn and torches seem to be getting big and keeping their wonderful green color the entire time I have had them. I have 2 anemones a bubble tip and a rock flower. The rock flower was almost dead and incredibly bleached when it was given to me, and it has stayed in the same spot for close to 6 months and regained most of its color. The bubble tip started getting stringy and not so bubbly about the same time the zoas started acting up. Within the last month it moved to any spot in the tank it could navigate to and finally found a new spot about 10 inches lower than where it is normally placed.

I am really freaking out as I have lost a ton of money in some really nice high end zoas from their deaths. I have been through what I feel like is EVERYTHING and can't get them to start opening up. I am looking for some personal 1x1 help to really help isolate whats happening and get what zoa's i do have left back in healthy condition. I am willing to do whatever it takes to get them back and healthy. This is my first saltwater tank and I have exhausted all my local resources. I have had 5 Freshwater tanks that have been up and running healthy for 5 years+. From everything my LFS and I can determine there is not much wrong with my water quality anymore. I will post all my test results below.

I use a RedSea test kit for Alk, Mag, and Calc, and I use an API test kit for Ammonia, Nitrate, Nitrite, and PH
Here is the last week's worth of results:

11/12: Ammonia: 0 -- Nitrite: 0 -- Nitrate: 0 -- PH: 8.0 -- Alk: 9.2 dKH -- Calc: 460 -- Mag: 1500 -- Salinity: 1.024
11/15: Ammonia: 0 -- Nitrite: 0 -- Nitrate: 0 -- PH: 8.0 -- Alk: 9.8 dKH -- Calc: 470 -- Mag: 1700 -- Salinity: 1.024
11/17: Ammonia: 0 -- Nitrite: 0 -- Nitrate: 0 -- PH: 8.0 -- Alk: 9.8 dKH -- Calc: 460 -- Mag: 1380 -- Salinity: 1.024
11/18: Water Change (I use RedSea salt water made/mixed at my LFS set for 1.024 salinity)
11/19: Ammonia: .25 -- Nitrite: 0 -- Nitrate: 0 -- PH: 8.0 -- Alk: 9.2 dKH -- Calc: 430 -- Mag: 1500 -- Salinity: 1.025

Everything seems pretty stable, and when I am testing twice per month this is about where I see my levels. If anyone is willing to spend/donate their time to helping me I would greatly appreciate it. Currently I don't dose anything except the alk buffer if I notice it getting too low. My LFS sold me some "Prime" to help with any ammonia bumps I might notice. I completely cut out extraneous food such as reef chilli and Fuel since the zoa's started having major problems. I used to do reef chilli and fuel twice per week.

Also, as a side note in the last 3 weeks my skimmer seems to not be skimming anything, no foam and nothing in the cup. I took it apart last night to clean everything and make sure my water level is correct, and still today no foam nothing in collection cup.

Please I really don't want to lose any more fabulous zoas.
 
That's horrible! I really feel for you I've lost nice corals, I think we all have. You didn't mention inspecting your corals, maybe it's a disease like zoa pox, or a pest. Could you get a picture? I'm not sure how to help you otherwise but I'll try and find some info on the topic, the most I can do right now is bump this thread.
 
Sorry for leaving that part out ...about a month ago I dipped ALL zoa frags in a dip...I double checked and triple checked for pests both before and after the dip, and only saw one or two critters in the dip water...there's some algae on some of the Zoas but most have nothing on them...I try to turkey baste and get any debris or detritus off if I see it build up but mostly clean
 
What fish do you have? Sometimes fish will nip at your zoas, like aiptasia eating filefish if they run out of aiptasia. Or sometimes copperbands I heard can nip.
I'm lighting the joshporksandwic signal!
 
I have a 6 line wrasse, a royal gramma and a yellow tail damsel... I bought a peppermint shrimp to eat aptasia a long time ago and I thought he might be nipping at some of my lps and he has evaded my capture forever now just hangs out behind the rocks where he knows I can't try to snag him ...my cuc has been dying a little bit just the hermits...my 2 snails are fine but noticed a few hermits die off
 
You say your hermits are dying? Are you sure they just didn't molt? If your having a problem with your inverts dying then I would say most likely something chemistry wise. How old is your tank? Any new additions when this first started? What is your flow like? I had a similar problem with all of my zoas closing up and at first thought it was my new lights, only to find out that my flow was too much for them. I watched my nice 10 polyp fire and ice slowly melt down to 4 polyps. I tried everything moving them all over my tank, iodine, revive, and coral rx dips with no success. Took one of my powerheads to malfunction decreasing flow for me to realize it. I noticed I had more open zoas so I turned off my other pump and now they all open up. It did not seem like a lot of flow to me but to them it did. Do you run GAC?
 
I have a 6 line wrasse, a royal gramma and a yellow tail damsel... I bought a peppermint shrimp to eat aptasia a long time ago and I thought he might be nipping at some of my lps and he has evaded my capture forever now just hangs out behind the rocks where he knows I can't try to snag him ...my cuc has been dying a little bit just the hermits...my 2 snails are fine but noticed a few hermits die off
Peppermints are evil! :lol:
 
Flow is something I have never tested and brings up a good point I added the extenders to the return pumps to help navigate flow and it could be around the same time they closed up...it most certainly does not seem like a of flow because my long flowy corals are barely moving in the flow so I never considered it to be too much.

I don't run GAC but I also never replaced the carbon in my filter media until a week ago when I realized I should replace that every couple months.
 
Lighting, how long have you had the kessil Hate to say it but take it off. Put on sum t5s. IMO
 
I've only ever used the kessil...I thought it was a top of the line light for reefs and other people I know including my lfs use the 360 and 350 and have no issues like me
 
The only things i see weird is your magnesium swinged 200 points in a few days the lets me to believe bad test kit. Other than that zoas need a little bit of phosphates. 0 phosphates is too clean. Sps love it but zoas don't. Try to feed a few extra times a day. In my tank I keep phosphates as of lately .10+ but last time I checked they were like .25 and everything looked good.
 
I agree that nutrients may be a little to low , try adding to your bioload and feeding the tank a bit more often 3 fish isn't much and cuttg back on the foods would be making it worse then :)
 
Thanks for your replies guys! I am sorry I still have yet to take pictures :( The reason my nutrients are so low is because when I took my water to be tested at LFS when they noticed alk and ph swing...my nitrates were at 20+ ppm. They suggested I lower it down a bit. They did mention zoa's like "dirtier" water, but I guess I went over board and reduced it down below where it should be.

Also, when it was around the 10 range I was still experiencing this issue. I am completely flying dark in regards to lighting and flow as I don't have a PAR meter or a flowmeter. From what I have read with other users that have kessils and my tank dimensions I think I should be "OK" at 85% intensity with it being 8.5 inches off the water. I might crank it up to 100% intensity to see if I see any improvement. If it does have to do with lighting how soon should I see improvement? If the zoa's are getting too much light would they be acting the same as they are now? Or would they be open and just bleached looking?
 
I'd try going down on the light intensity first... Your cal is where it should be but you say your corline is bleaching. One of my first bad moves with my tank was to turning the light up. Corals didn't like it but bad alage did.
 
I'd try going down on the light intensity first... Your cal is where it should be but you say your corline is bleaching. One of my first bad moves with my tank was to turning the light up. Corals didn't like it but bad alage did.

+1 I think the problem light intensity, or spectrum. You should see a diff. within a week. Turn it down first if that don't work try T5s or halide. Also if temp high could kill coraline.
 
thanks guys, I have reduced my intensity starting today to 60% max. I will let that go for a week to see if I notice any improvements. Right away I noticed within a couple hours the zoas are closing more then usual to be completely closed instead of just half open. Might be they think night time is coming early because I reduced the intensity, but we will see how it goes over the next week.
 
side note; I contacted Hydor, and they helped me break down my impeller, and now I believe my skimmer is starting to work for the first time since I bought. Huge difference in foam.
 
Still no positive update lights are now at 50% intensity and no improvement on zoas....algae started to break out so I cut the lights back 2 hours daily it seems my hermits are either dying or not eating algae I don't know what's going on
 
Do you have asternia stars in your tank? I have had steel blue ones attack z's and p's. All it takes is one nip and a whole colony will close up.
 

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