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10/16/2015, 11:57 PM
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#1 |
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Registered Member
Join Date: Feb 2015
Posts: 121
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Please if on this thing growing on the rocks
Hi everyone,
Can someone please I'd what is this thing growing on the rocks.. They have a mouth kinda thing and have grown in clusters in parts of the tank.. And if it is bad or good? 
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10/16/2015, 11:58 PM
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#2 |
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Registered Member
Join Date: Feb 2015
Posts: 121
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Id I meant..
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10/17/2015, 12:00 AM
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#3 |
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Registered Member
Join Date: Jul 2010
Location: Otis, MA
Posts: 1,126
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Looks like some sort of palythoa. As per usual I will request a picture in which some detail and true color can be seen
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120G Miracles Starfire SPS system Calcium Rx, Bio Pellets, Radions and Gyres My Build Thread: http://www.reefcentral.com/forums/showthread.php?t=2549420 |
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10/17/2015, 12:17 AM
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#4 |
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Registered Member
Join Date: Jul 2010
Location: Otis, MA
Posts: 1,126
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Might be yellow star polyps.
 Hard to tell from that pic.
__________________
120G Miracles Starfire SPS system Calcium Rx, Bio Pellets, Radions and Gyres My Build Thread: http://www.reefcentral.com/forums/showthread.php?t=2549420 |
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10/17/2015, 12:52 AM
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#5 |
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Registered Member
Join Date: May 2006
Posts: 2,354
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They look like button polyps.
 They are good but they grow fast and may have to be controlled. What kind of light do you have they seem to really be stretching out in the pic. |
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10/17/2015, 07:48 AM
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#6 |
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Registered Member
 
Join Date: Apr 2008
Location: Grove City, Ohio
Posts: 10,806
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They are colonial hydroids. Although they will eventually self limit their population, they are very invasive and can sting other creatures. IME, the best way to bet rid of them is to remove the rock and scrape them off. Wear thick rubber gloves - the tubes will break off easily and end up in your hands sorta like splinters, except they are difficult to remove.
You can also cover them in kalk paste, but the tubes will be left behind, just waiting to jab you in the hand.
__________________
I'll try to be nice if you try to be smarter! I can't help that I grow older, but you can't make me grow up! Current Tank Info: 120 mixed reef with 40b sump, RO 150 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, BM curve 5 skimmer |
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10/17/2015, 09:56 AM
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#7 |
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Moved On
Join Date: Jul 2000
Location: Stockton, CA
Posts: 14,854
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Smothering them with epoxy is another option.
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10/17/2015, 10:00 AM
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#8 |
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RC Mod
 
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If in one area, a hydrogen peroxide dip after scrub-off might be effective. I've done in xenia and rooted caulerpa and halimeda by that method.
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Sk8r Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low. Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%. |
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10/17/2015, 10:10 AM
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#9 |
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I got nothin'
Join Date: Nov 2004
Location: The anals
Posts: 6,420
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X3 hydroids.
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Quitters never lose. [QUOTE=CStrickland]Who gets mad at a starfish?[/QUOTE] Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump |
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10/17/2015, 12:42 PM
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#10 |
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Registered Member
Join Date: Feb 2015
Posts: 121
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Thanks guys.. It doesn't look like palythoas as they are really tiny.. Sorry for the picture quality.. Will try to get a better one.. Now that I know these are not good news, will see where all they have colonised.. But any opinions what could have caused their growth? So I could take measures that it doesn't spread further..
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10/17/2015, 01:30 PM
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#11 |
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Registered Member
Join Date: Apr 2008
Location: Grove City, Ohio
Posts: 10,806
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They just appear. Hitch hiked in on something. They feed on excess nutrients, so limit feeding and keep doing water changes. IMHO, they are a pretty normal part of establishing a new system.
__________________
I'll try to be nice if you try to be smarter! I can't help that I grow older, but you can't make me grow up! Current Tank Info: 120 mixed reef with 40b sump, RO 150 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, BM curve 5 skimmer |
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10/17/2015, 10:06 PM
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#12 |
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Registered Member
Join Date: Feb 2015
Posts: 121
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Great thanks billdogg.. I was feeding a bit more lately, and missed on a couple of water changes.. That could have fueled their growth I suppose..
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