Originally posted by C-17 jet mech
I curently have a crocea clam under my T5 4 bulb set up. So far so good. I placed him half way up the tank. Although my LFS said that it would take 3 months to loose a clam. Who knows, it has been 3 weeks and no change in color, and seems to be fine. All the T5 non-believers out there are staring to see the light!!! hahaha My lfs who is die hard metal halide just got a 6 bulb set up and is showing me these things like I have never heard about them before!! I told him that I have been mentioning it to them for about a month, but oh well let him see for himself. Hows your tank duing Mr TIMES??? I saw that you were having some problems a while back.
3 weeks honestly is not enough time to see how the clam will do in the longrun. It could take several months before the clam dies under that lighting. I would actually tend to agree with the LFS's advice, that the clam would most likely be lost within the first 3 months of being purchased.
I honestly don't trust those T-5's, regardless of the information said about them. T-5 lighting is fairly new. It could take years to figure out if something will really live under the T-5 lighting. I would always stick with halides when it comes to keeping Tridacna clams, esspecially the light-loving T. Maxima and T. Crocea
Graham