advice from clam experts!

[reefiness]

ya i agree with vipers about the croceas needing more light then maximas.
also viper aren't H.hippopus even less light demanding then gigas although the H.H. are not tridacnas i think.

 

[fishamajig]

just my .02
but I thought the darker the pigment the more light the clam requires. I have a crocea clam and had a deressa clam. when i first started i had 4x65w pc now i have that plus 2x 175 w mh when i had just the pc's the deressa did ok, not the greatest color but there was definate growth and the crocea looked bad drab in color and did not grow much ( i dont think at all) now with the mh lighting the crocea looks more colorful and seems to extend a bit less. the deressa went to a friends reef tank. i have never had a maxima or a squamosa but this it what i found with these 2 clams.

 

[viper_930]

Originally Posted by reefiness
also viper aren't H.hippopus even less light demanding then gigas although the H.H. are not tridacnas i think.
That's correct. H. hippopus are not of the genus Tridacna, but they do belong to the family Tridacnidae.