I was just wondering if some one could help me with what to look for in a clam so that I know that it is healthy. I had one crocea and it was doing ok for a while and then it kicked the bucket and now I am kind of skeptical to keep one. I have a 75 gallon with a TEK T-5 with 336 watts, or 6 56 watt bulbs. the lights are pretty new. calcium is 420 and the dkh is 8 and I am rising that to around 10. the ph is 8.2 any help would be awsome.