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grafxalien

pod eating zoa?

I noticed for about a week now my favorite zoa colony hasnt been opening and the number of polyps have been disappearing. however, i worked ~ 90hr last week so didnt have time to investigate much. Today there is only 2 freaking closed polyps left, so i said what the heck, i will fresh water dip it. after about 5 secs in this bad boy flew off the rock. Looks like a big pod to me, but i am pretty new at reefing still. Im guessing if there is one doing it, there are probably more. how do I fix this problem? It is a 10 gal tank with 20 gal sump

 

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Search on here for several threads called

amphipods stressing my zoas

Amphipods eating my zoas

Bastards on my zoas

 

Then do a fresh water Dip on the affected colonies. Swirl the colony in the water to dislodge the critters.

They will come back but this gives your zoas a few days breathing space and a chance to open.

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what are your params?

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I have the same issue. you need something to eat them. likely a fish. like wrasse. or others. just research and talk to the people u buuy ur stock from. . ur tank size will play a part in what kinds of fish u may be able to use. ive yet to find a sultion that does not require a fish .

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Sea horses. But that is not a solution unless sea horses are all you have. I moved my chaeto to another side of the tank today and hundreds of them came crawing out, slithering down the back wall into the substrate and then into the rocks. ARGH.

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Very few species of amphipods actually eat zoas. Almost every tank has amphipods and only a couple people have problems with the species they have. I would lean more towards zoa eating nudibranchs since the one you have looks small while the zoa eating amphipod species tend to be quite large. Either way, do dips in tank water colored yellow with iodine for 15 minutes every 2 days for a total of 3 dips. That's the only way to get rid of nudis and in the off chance it is the amphipods, the dips will kill any that keep coming back to the zoas.

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my only tempary soultion is to keep my moonlights running 24/7. but mine a kinda bright. it keep the suckers in hiding lol

 

regular iodine? dip coral only. or rock also?

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thanks for the replies. unfortunately my lfs is closed mondays, will get some iodine dip tomorrow. unfortunately its prob too late for this colony, but will keep my eye on the others. The pic may be a little deceiving. The body of this guy is over 0.5"

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my only tempary soultion is to keep my moonlights running 24/7. but mine a kinda bright. it keep the suckers in hiding lol

 

regular iodine? dip coral only. or rock also?

Regular iodine is fine so long as it's pure iodine. I use lugol's solution because it's specifically made for use in reef aquaria so I know it doesn't have anything harmful in it. You can dip the rock if you absolutely need to, but the dip will kill beneficial microfauna so avoid it if you can.

 

thanks for the replies. unfortunately my lfs is closed mondays, will get some iodine dip tomorrow. unfortunately its prob too late for this colony, but will keep my eye on the others. The pic may be a little deceiving. The body of this guy is over 0.5"

If it really is that big then yeah it's probably a zoa eating pod. Keep dipping the zoas every few days to keep them at bay, but you may need to get a fish that will eat them as a permanent solution. How big is the tank?

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Your zoa colony was probably already going downhill when these guys came on board. They're just doing what they do, cleaning up the mess. I think you have something else in there thats taking out your zoas. Any big bristle worms? Emerald crab?

 

What are your params? When I started going more SPS, I dosed to keep my Ca, Mg, and KH up high, and my skimmer running 24/7. My SPS did good, but my zoas took a hit. I moved them into my wifes pico (no skimmer, no dosing), and they bounced back.

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no emerald crabs. I haven't seen any large bristle worms but who knows what is lurking. I haven't had a chance to grab params yet since i have been working so much, but all my other coral seems to be doing well, including multiple other zoa colonies

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Your zoa colony was probably already going downhill when these guys came on board. They're just doing what they do, cleaning up the mess. I think you have something else in there thats taking out your zoas. Any big bristle worms? Emerald crab?

No Mike, amphipods do eat zoas. This has been documented in many threads on this forum. The species of amphod that eats zoa are really large, mine are about 3/4 in to 1 inch long. HATE THEM.

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i HAD those before i got my mandarin....yellow coris..... and leopard wrasse. but now i still am dealing with dozens if not hundreds of asterinas that dont mind taking a bite out of my zoas

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I cannot attest to amphipods actually eating zoas, but I can certainly attest to them irritating the everloving HELL out of them. I have been doing pretty regular FW dips with my zoa colonies recently.

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That's idk because I have like 70 of those ones in my 6g fluval and they dont mess with my corals they are so ugly :S

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I have big pods(at least 1/2") that crawl on my zoas and have not seen them eat any. After I had zoa pox on a few colonies and treated them I laid them on the sand and noticed they did clean up the zoas that did not make it. So if they are the cause or effect of your situation I don't know but they will definitely eat dead or deteriorating zoas.

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Are they this size?

 

2rxi8ev.jpg

 

288nvvp.jpg

 

not as fat but certainly as long! EEEEEKS

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well, examination with flashlight tonight revealed pods that were even bigger than the one i caught. im talking 0.75". Also found 3 sundial snails.... the snails are an easy removal. how the heck do i get these big pods out?

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Are you sure you found sundials? Collonista snails look very similar but are reef safe and much more common

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Those amphipods are big enough to pass as shrimp in my Chinese food...

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Are you sure you found sundials? Collonista snails look very similar but are reef safe and much more common

 

im not possitve but I am not chancing it. out they go.

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its hard to believe that pods eat zoas till it happens to you. I have been in the hobby long enough never had a problem till last month. My zoa frags were gone over night I started to watch closely and saw the pods eating the zoas. i moved them to another tank (all tanks plumbed together) and they did just fine.so the answer still is unanswered why do they eat them?

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FWIW, I see pods all the time walking around my zoas, and the zoas open up fine. It must be a specific variety that harms zoas.

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