James, isn't it possible, since you had those beautiful clams for 10 years that they died slowly BECAUSE of the LED's not being sufficient? Remember, they thrived until you installed the LED's at the end of 2007. They lived until 12/08. One year and then suddenly dieing, not uncommon for a clam to die overnight when looking healthy the day before. Maybe they had insufficient lighting with the LED's.
Just a theory.
Russ
Wingo is right. The two 10" giant clams were never under LED light, they were under Giesemann 250W MH + T5 since Dec. 2007 in the following tanks. The pictures were taken on 08/11/08, previous pictures for tank with LED lights in this thread were taken on 02/05/09. All tanks are under the same water system.
The clam was on the top of the following picture,
Another clam was on the center bottom corner behind the big rock with xenia in the center,
Prior to Dec. 2007, the clams were in the following home tanks with MH + T5.
See the big clam below the lion fish.
The death of the clams has nothing to do with the LED lights. Actually, I feel Solaris "I" LED has stronger light than Giesemann 250W + 2 T5 because I found some bleaching mushrooms, brain corals on the bottom of the tank. Sanjay sent JBNY to measure the light, they have the numbers.
A week before the death of all clams, I dumped (not dosed) at least 200 ML of vodka in the tanks twice, and I believe it was the problem.
Prior to that, I had a 15" 15 years old clam died, but I am the one to be blamed. At that time, I was off the hobby, and did not make any water change for almost 5 years, snails grew inside the ETSS skimmer, and the temp went up to 90F in summer time without a chiller.
James