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07-01-2008, 06:17 PM
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#1 (permalink)
| | Plankton
Join Date: May 2008
Posts: 19
Karma: 2
 |  Derasa Clam closed
I have a derasa clam which I thought was doing great. But over the last few days it remains closed for most of the day. Opens in the morning for 2-3 hours then shuts up. I can't see it being bothered or nipped at. Some details:
Lights are pfo led lighting, clam is one third up - getting lots of light. Water quality good: no detectable nitrate, nitrite or ammonia. Everything else doing great.
Should I be concerned ? Anything to be done ?
Thanks for your help.
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Oceanic 70g, 30g sump, Acqua c ev-180, Solaris PRO led, 60 ils LR, 50lbs of live sand, 1 foxface, six line wrasse, 2 clown, 1 Royal Gamma, 2 brain coral, star polyp, colt coral, torch coral. | 
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07-02-2008, 12:00 AM
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#2 (permalink)
| | Banned
Join Date: Mar 2008 Location: rocklin
Posts: 907
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maybe its cause they feed on nitrates??? i know someone with a 180, and he has 0 nitrates, and has killed around 15-20 clams, and i have relaly high nitrates and have a 6-7 inch derasa clam and he has been fine for a long time, so maybe there is a coincidence?? (SP?)
so maybe he liked to filter for the 2-3 then doesnt want to waste the energy for the ret of the day with getting little to no food?
i am no expert thats just my thought. | |
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07-02-2008, 02:59 AM
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#3 (permalink)
| | Ritteri Anemone
Join Date: May 2008
Posts: 613
 
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Quote:
Originally Posted by nemo1991  maybe its cause they feed on nitrates??? i know someone with a 180, and he has 0 nitrates, and has killed around 15-20 clams, and i have relaly high nitrates and have a 6-7 inch derasa clam and he has been fine for a long time, so maybe there is a coincidence?? (SP?)
so maybe he liked to filter for the 2-3 then doesnt want to waste the energy for the ret of the day with getting little to no food?
i am no expert thats just my thought. | have you added any phosphate remover????
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2 systems #1 55 gal softie/lps, 70 lbs LR, black sand, too many corals to list, w/ 4x96 watt pc, 2 seio 1100 pumps, diy rubbermaid sump with custom skimmer.
#2 50 gal sps/clam tank, 60 lbs LR, Bare Bottom, acropora dominant, with 2 x 175 watt 10K SE hamiltons and 1x 96 watt pc actinic, CLS powered by reeflo snapper (Tank has approx 60 times flow rate), coast to coast overflow, Lifereef Calcium Reactor w/ ph controller, and custom skimmer. | |
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07-02-2008, 02:59 AM
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#4 (permalink)
| | Ritteri Anemone
Join Date: May 2008
Posts: 613
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crap I didn't mean to quote that above me | |
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07-02-2008, 05:17 AM
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#5 (permalink)
| | 3reef Moderator
Join Date: Aug 2004 Location: Wethersfield, CT Age: 39
Posts: 6,372
 
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I wouldn't concern myself about lack of nitrates. I have "0" nitrates in my tank and my clams do just fine. I would be more concerned about parasites. Have you checked underneath the clam for pyramid snails or worms? Have you tried a freshwater dip on the clam? I have also heard about certain phosphate removers having a detrimental affect on clams but am not sure which brand(s) are potentially "dangerous". | |
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07-02-2008, 05:50 AM
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#6 (permalink)
| | 3reef Sponsor
Join Date: Aug 2006 Location: Va/Ct
Posts: 4,359
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I'd dip it asap I bet its full or snails or worms , If you check under it becarful to not harm its base . _________ Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible (Doug Larson) | |
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07-02-2008, 05:30 PM
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#7 (permalink)
| | Peppermint Shrimp
Join Date: Mar 2008 Location: Urbana Age: 24
Posts: 403
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agree dip it. _________ 75 gal, 6x54 watt ho t5, coralife super skimmer, fluval 204, ehiem ecco 45, 2 stealth heaters, 2 kolaria 1, 2 kolaria nanos, 125lbs lr, 100 lbs ls, ZOASSSS!!!!!!
[SIGPIC]  | |
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07-02-2008, 06:42 PM
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#8 (permalink)
| | Plankton
Join Date: May 2008
Posts: 19
Karma: 2
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OK I checked underneath and I found one small pyramid snail- very small. The clam is closed so I cannot check inside. Is this a cause for a freshwater dip?
I do have a two little fishes phosphate remover - I use opti-phos. Should I remove this ? | |
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07-02-2008, 06:44 PM
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#9 (permalink)
| | Plankton
Join Date: May 2008
Posts: 19
Karma: 2
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One more matter - before it closed I did some epoxy work using Aqua Scape on the reef that made the water a little cloudy. Possibly the next day I noticed the clam closing. May be a coincidence. | |
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07-02-2008, 10:23 PM
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#10 (permalink)
| | Spaghetti Worm
Join Date: Mar 2008 Location: Redmond, Or Age: 48
Posts: 196
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Clams do feed off phosphates, so the remover could have an effect but doubtful. I run phospban on my tanks with no issue. Do make sure when running any phosphate remover to run about 5 gallons of water through it before running in your tank to reduce the chance of getting remover traces in your water. On the epoxy, take a Turkey baster and blow the clam off in case some residue settled on him-her. | |
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