Marks on my crocea clam

Help Support Reef Frontiers:

trout

Active member
Joined
Nov 1, 2011
Messages
40
Location
Sheffield, United Kingdom
Hello,

I bought a crocea clam in October 2011, which had a mark on its mantle:



This mark seems to be spreading to other parts of its mantle. This is one of its latest pictures:



The clam was kept under a 250W SE BLV 10000K MH bulb with Lumenarc mini reflector until March 2011. However, it has been kept under 6 X 39W T5 tubes (ATI Sunpower) since then. The clam receives around 600 mmol PAR and has been growing steadily. My recent water parameters are as follows:

Ca: ~425 ppm
KH: 8.60 dKH
Mg: 1380 ppm

pH: 7.80-8.15
NO3: 0.1 ppm
PO4: <0.008 mg/l

Is this something I should worry about?

Thanks in advance.

:wave:

T
 
Last edited:

mercenary-grunt

Well-known member
Joined
Jan 8, 2012
Messages
745
Location
Tacoma
to my knowledge your ph swing is quite large. please some one correct me if im wrong. my $0.02.

Sent from my Galaxy S3 using Tapatalk 2.
 

kpiotrowski

Kevin
Joined
Jun 14, 2011
Messages
1,642
Location
Buckley,wa
to my knowledge your ph swing is quite large. please some one correct me if im wrong. my $0.02.

Sent from my Galaxy S3 using Tapatalk 2.

Please share your secret for this minimal ph swing. I can go .17 in 24hours (but generaly around .1)and have that 50g display fuge on reverse light cycle, my alk is 9dkh and have my apex dose alk at the begining of low ph periods and even run and extrenal air pump from outside air to my skimmer intake.
 

james734

Well-known member
Joined
Apr 9, 2006
Messages
1,666
Location
Renton, WA.
Not sure if what's noted above is the swing in 24hrs. Or if just the range it's kept in.

Agree, of this is the swing in 24hrs, it's a lot.
 

trout

Active member
Joined
Nov 1, 2011
Messages
40
Location
Sheffield, United Kingdom
Thanks for all the replies.

The swing is in 24 hours, but does not seem to affect any animals adversely. The range of swing changes when the amount of chaeto in my sump changes. Surely, the swing in pH cannot be the cause of the markings on my crocea, can it? If it did, all my clams would be affected, would they not?
 

NanaReefer

Well-known member
Joined
Jul 13, 2011
Messages
2,076
Location
U.P. of Michigan
That swing is fine for a 24hr period, actually normal. If anything I would lean more towards it being a light issue, to little if anything. I wouldn't worry about it though as your clam looks healthy :)
 

trido

Fish Tank Freak
Joined
Sep 28, 2006
Messages
3,524
Location
Lynnwood
That clam looks quite healthy and is just getting more colors.

As far as the Ph swing, my tank reads from 7.8 at day to 7.5 in the morning. Everything is growing and I dont worry about it. My probe needs recalibrated but it is still swinging three tenths.
 
Your email address will not be publicly visible. We will only use it to contact you to confirm your post.

Latest posts



Top