Originally Posted by
manners
http:///forum/post/3240817
iv always wanted a clam but i dont think that i have enough lighting
46g
2- 10kk 39w h/o t5
+ actnics
This is a gray area. You might have enough light.
Anyways, it also depends on what type of clam you want, a Derasa requires less lighting than a Maxima. That being said, I have a Maxima under PC lighting, so anything is possible. What's as important as lighting for a clam is the calcium level and overall water quality. If you place it up high on the rocks to get it closer to the light, it will probably jump down. Most prefer to be in the sand.
If you decide to keep it in the sand, and have a sand sifting goby, keep an eye on it. My goby tries to bury my clam all the time no matter where I put it and if I place it on the rocks, it jumps down back into the sand
Like Flower said, try to find one that is at least 3". The smaller ones, especially ones that are only 1-2" are much more difficult to care for and have a higher fatality rate.
If you're questioning your lighting, try to find one that has been kept under PC or T5 lighting or has been kept far away from MH lights (if you see one that is far away from a MH light, find out the wattage of the light, if it's far away from a 150watt, great, if it's far away from a 400watt, pass).
When observing the clam before you purchase it, wave your hand in front of the tank or over the top and pay attention to how they close and open. You want one that is less timid, but still has some movement to it, or that opens back up quickly. I never purchase a clam that is "skiddish" and closes up immediately and doesn't open right back up. I try to look for one that quickly retracts slightly and then reopens immediately. The most recent one that I purchased a week ago actually doesn't really retract at all so I'm able to walk right up to the tank and not worry about the clam closing up for pictures or to show someone, etc.
Good luck