Clams under pc?

G13

New member
I have a 4" crocea clam and a 2 1/2" maxima in my 45 gallon for the past 3 months (250W HQI 14K), on the sand bed (24" tall and lights are 10"above water). I am setting up a nano tank, 10 gallons under 96 watts of pc. Can any of the 2 clams live AND thrive under 9.6 watts of pc lighting (50/50).

Thanks,
 
<a href=showthread.php?s=&postid=7489716#post7489716 target=_blank>Originally posted</a> by mbbuna
i would try it. enjoy your high light clams under the 250w MH

Did you mean to say that you WOULDN'T try it?
 
PC's and clams don't go together. Its not really a matter of how many watts per gallon of PC you have. You need the strong, penetrating light from a MH.
 
I think that it should be ok, There was a petsore here in Morgantown that kept a HUGE clam it was about the size of a basketball. Any way that clam live and still is living under regular strip lights for 15 years in a 150gallon cube.
 
<a href=showthread.php?s=&postid=7494168#post7494168 target=_blank>Originally posted</a> by schscountryboy
There was a petsore here in Morgantown that kept a HUGE clam it was about the size of a basketball. Any way that clam live and still is living under regular strip lights for 15 years in a 150gallon cube.

that huge clam is not a Crocea or Maxima like this person has. these 2 types of clams are the most light demanding of the clams and PC's just dont have the intensity for them to thrive
 
metal halide is the best to use for high light clams such as those....my dual 175w halides have been keeping my 3 croceas and one maxima happy for three years now.....all are nearly 6 inches now.
 
Light is the most important part of a reef, other than the water. Light is critical to corals and clams and their livelyhood depends on it. Putting clams under poor lighting is like putting them on a starvation diet. As said above, this huge clam you saw was a deresa or squamosa, which usually do ok under PC. For a $150, which is what you will pay for 2 or 3 clams, you can easliy upgrade to MH.
 
OK I have 10 clams. I have a blue tear drop Maxium, 3 crocea's, bule spot gigas, 3 other maxiums and 2 squamosa. They are currently under 2 400 W 13K halides with VHO atinics. I would like to move the squamosa and maybe the gigas to my 125 gallon with 640 W of VHO. They all are healthy and growing well. Would that be a good idea to move them to free up space?
 
i would hate to see you move them when they are doing so well. going from 2-400w MH(that can really drive the light into the water)to VHO's is going to be a big change.
 
I wouldn't do it either. But it is not so much about lighting. the lighting is fine. Croceas do very well under pc's if you dose enought phyto. But to me it is the concern of small water volume and the possibility of temp and comp fluctuation.
 
I had a gigas clam that doubled in size in about 6 months under 130 watts of PC lighting in a 29 gallon tank. I had to sell the clam because it was sucking up all the calcium in the tank and the other corals were suffering. I also very rarely dosed some phyto, maybe every two to three weeks.
 
not sure about the croceas doing very well under PCs especially as they grow larger. phyto will have a minimal effect.
 
I posted this earlier, when someone else was saying they "heard" that croceas could be kept under PC. Read it and think about it.

"The problem with waiting for someone, or even a few people, to come in a say that they've kept a crocea under fluorescents is that anyone that has done so more than likely just got lucky with their clam pick.

We tend to think of individuals of "lower" animal groups as all being the same - but they aren't. Each individual clam is genetically distinct, and field observations back that idea up.

After all, what do you see in the wild - LOTS of them in a couple of feet of water. A good number down to several feet. Very few at say 12 feet. Only a very rare individual at 20 feet...

What I'm getting at is that if you took 100 croceas - all of them would be able to live under a 250w MH. Maybe 90 could live under 175wMH. Maybe 50 could live under a full set of T5 if placed on the rockwork. Maybe 10 could make it on the bottom with T5. And maybe 1 out of that 100 would make it on the bottom under a couple of VHOs. I made those numbers up, but you should get the idea.

So, again, if one person or even a few come out and say they've kept a crocea under fluorescents - that in no way implies that all croceas would make it under the same conditions."



"Croceas do very well under pc's if you dose enought phyto"

steven liu-

Please, by all means, give us specific examples of all the croceas you've kept for over a year under PC by dosing phyto. I'd like to get as much detail about something like that as possible. BTW - where were you when over 1,000 looked at my question/post about keeping ANY species long-term under fluorescents??? Only 7 of over 1,000 said they'd done it, and none of those were croceas.
 
I think I will just leave the clams in the 92. The tank with the VHO lighting is a 125 with a 110 gallon sump. But I think I won't risk it
 
clamcrop.jpg


5 months under VHO in a 20L ... crocea
 
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