Squamosa died, but Maxima and Crocea great

[Sushi raiser]

Hello all,

I have an SPS tank with 3 clams. All lams are ORA and put in the tank at the same time and within 6 inches of eachother on the sandbed.
The clams are: a Crocea, a Maxima and a Squamosa....

All 3 were doing great!!!! Open all day. Sensitive to light change. Etc......
I noticed one day the Squamosa was opening but slower to react to fish swimming over and light changing than usual....
The next day, i dosed as per usual, but when I cam home from work it was gaped and dead.
However, the Crocea and Maxima are still doing great!!!!

Any idea what could have happened?

Parameters.....
X2-- Hydra 26 Hd lights
Tested using Red Sea Pro
Salt: Aquaforest ProBiotic.
Sg: 1.025
Calc: ~430
Mag: 1300
Nitrate: 20-30
Ammonia, nitrite: 0
Phosphate: 0
Alk: 3.8 Meq/L. 10.6 dKh
Ph: 8.1 during day. 7.9 at night (using Pin Point Ph monitor)

Any idea would be great!!!


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[mystersyster]

Hello all,

I have an SPS tank with 3 clams. All lams are ORA and put in the tank at the same time and within 6 inches of eachother on the sandbed.
The clams are: a Crocea, a Maxima and a Squamosa....

All 3 were doing great!!!! Open all day. Sensitive to light change. Etc......
I noticed one day the Squamosa was opening but slower to react to fish swimming over and light changing than usual....
The next day, i dosed as per usual, but when I cam home from work it was gaped and dead.
However, the Crocea and Maxima are still doing great!!!!

Any idea what could have happened?

Parameters.....
X2-- Hydra 26 Hd lights
Tested using Red Sea Pro
Salt: Aquaforest ProBiotic.
Sg: 1.025
Calc: ~430
Mag: 1300
Nitrate: 20-30
Ammonia, nitrite: 0
Phosphate: 0
Alk: 3.8 Meq/L. 10.6 dKh
Ph: 8.1 during day. 7.9 at night (using Pin Point Ph monitor)

Any idea would be great!!!


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Nitrate is too high. Try and bring that down to below 5. Clams need some phosphate in the water (like most corals). Try to bring that up no higher than .03. As for why it died... it could be low nutrients, or low light. What is your light set at?

 

[Sushi raiser]

Been struggling to get nitrates down. I do a big water change and cut down on feedings and the fish start to get aggressive. More than likey I don't have enough biofiltration.
I'm guessing at phosphates. The last time I had it testes was with API and it was 0.025.... but we all know API isn't exactly good.

The lights are set around 90 for all blue and violet. Under 20 for red and green and 10 for white. 50 for uv. Everything in tank (other clams, acropora, plate coral, Monti and aussy brain seem to like it)

Does the Squamosa need that much more light, to where it should have been moved up?

It went from really to to not in about 2 days.....

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[Sushi raiser]

0.25 poshpate.

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[Saxman7]

could have been the individual specimen (always check for pest, especially on the underside!) but I feel it's more the lighting than the nitrates as clams don't seem to mind nitrates from my experience. squamosas and deresas like less light than the others. usually people struggle with maximas and corceas because they don't give them enough light,but I feel you could potentially fry a squa or deras if you treat them like a maxima with too much light. hope the other two do well, it's common for people to treat them kind of like acros in a sense of letting them bind their foots to a small plate of rock so they can easy be moved up (or potentially down) to more elevated spots in the systetm.

 

[Sushi raiser]

I think you could be right about the light. I moved it up at one point bcz I liked it better on a shelf and it didn't open at all. I thought it was flow.... then moved it back down and it opened.

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[mystersyster]

I think you could be right about the light. I moved it up at one point bcz I liked it better on a shelf and it didn't open at all. I thought it was flow.... then moved it back down and it opened.


Yeah people were keeping these under PC back in the day. My 2 derasa clams live on the sand bed. You could always acclimate them to higher light, but my recommendation is put a few plastic sandwhich bags over the top of them (considering you have a cover). Remove one every seven days.