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Old 10-10-2014, 04:09 PM   #1
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Killing Live Rocks to get rids of Hydroids advice plz

Hi, need help ! Here's my situation.

Hi have an unknown pest: Hydroids or stranges parasites looking like aiptasias.

I have a 20g, with 20 pounds of live sand and 20 pounds of live rock.

My idea is to kill ALL my LR with javel or something else (boil?).

Here's the question:
Is the live sand alone enough to keep my live stock alive ? (nitrogen cycle)

Here's my bioload:
- 2 clownfishs
- lot of zoanthids
- 2 headed torch coral and 5 headed duncan coral.

I have a 50-90g HOB protein skimmer and a lot of water aeration.


Can u give me advice on that ? I don't plan killing thoses parasites with kalk/chems or superglue or anything else, I want a PERFECT CLEAN tank !

Here's what the parasites look like:


Thanks for any help !
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Old 10-10-2014, 11:31 PM   #2
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Anyways... I just started the process... Don't want thoses hydroids to spread on my frags rocks.

Before:


After:


150$ live rocks wasted
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Old 10-11-2014, 12:37 AM   #3
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Is the live sand alone enough to keep my live stock alive ? (nitrogen cycle)
Very very unlikely. I would invest in a sizable ball of chaeto immediately as well as some prime.

Also, never ever boil live rock. There was a man that did and it almost gassed him, his family, and his dog to death.
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Old 10-11-2014, 12:52 AM   #4
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Originally Posted by Mebbid View Post
Very very unlikely. I would invest in a sizable ball of chaeto immediately as well as some prime.

Also, never ever boil live rock. There was a man that did and it almost gassed him, his family, and his dog to death.
Yeah I heard that story about the guy that put boiling water on a zoa rock. The LR are in a bucket with 50/50 fw/bleach.

My clownfishs are mad, they attack my hands, I will monitor ammonia via API tests. Can't put cheatos, I don't have sump/refugium....

U think I'll get a spike even with the sand ?
Never seen an ammonia spike in a reef, what will be the firsts symptoms ? Fishs gasping at surface or more coral not opening ?
Also, my protein skimmer is overpowered for this tank and I do carbon dosing... Should I stop carbon dosing ?
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Old 10-11-2014, 01:26 AM   #5
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The coral having problems will be your first sign. The fish are a little more resilient than the coral.

I cant give advice about the carbon dosing though, because ive never really looked into it. The skimmer will help though.

The chaeto can go srraight into the display. Thats what I do when I qt a fish to prevent an ammonia spike.
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Old 10-11-2014, 04:06 AM   #6
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The coral having problems will be your first sign. The fish are a little more resilient than the coral.

I cant give advice about the carbon dosing though, because ive never really looked into it. The skimmer will help though.

The chaeto can go srraight into the display. Thats what I do when I qt a fish to prevent an ammonia spike.
The carbon dosing increase the amount and coloration (darker) of the gunk going in the protein skimmer... But I don't know if it require LR to work... I'll try to wet skim as much as possible.

Unfortunately, the only reef store here is moving, and it's closed for some more weeks... The only guy I know that have cheatos is in travel for 5 more months... I'll monitor NH3/NO2 in 4 days, and watch for any symptoms on corals/fishs...

I'll be [how to say politely d amned?] if I get a spike... I have nothing to keep the cycle working... Except some cycling product like Seachem Stability... Nutrafin Cycle... I can dose prime, but I don't think that's made for a long term usage...

Maybe massive waterchanges ? But this will be salt expensive (RedSea salts and RODI water)... Time demanding too... And bad for corals... But I was infested by pests... Aiptasia-X didn't worked to kill thoses (hydroids?)...

That's a sad day for me... Lost all my brittle stars (they were in rocks), lost a lot of zoans (rocks were infested)... 150$ rocks killed...
I really hope the sand do the job... Can I push my R420R LED Lights to 100%-100% instead 70%-70% ? And more time during day... Can this help ? They're currently dimmed to prevent algaes. Maybe a moonlight setting can help ?
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Old 10-11-2014, 04:26 AM   #7
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Do you live in the us? I have some caulerpa and chaeto I could probably ship to you.

Do you have a hob filter or an air pump?
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Old 10-11-2014, 09:43 AM   #8
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Aptasia X will kill those. Apply it just like you would to Aptasia. I have a few that I zapped with it a few months ago.


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Old 10-11-2014, 10:52 AM   #9
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Eesh....awful risky for some hydroids. I would have killed them manually. I would keep some prime or amquel on hand as well.
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Old 10-11-2014, 02:20 PM   #10
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Do you live in the us? I have some caulerpa and chaeto I could probably ship to you.

Do you have a hob filter or an air pump?
I live in Quebec, Canada. I have a Fluval C4 as HOB filter (for filter pad only), I have a powerfull 50-90g HOB skimmer on the 20g, two powerheads 240 GPH.

I'll ask on local forums if there's somebody near my home having this algae (plant?) for me. I fear introducing more pests... Outside temperature here is near 0C° at night, so hard to ship things....

Can I dip cheatos with iodine (Seachem Reef Dip) ?
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