Clams?

[SkiFletch]

Agreed, you've got some quality light in there Bomber. A crocea with a shell length of 3" or larger would do just fine midway or near the top of your rock stack . You could try one down as small as 2" but honestly, I wouldn't. If you get a really big one, keep an eye on your calcium and alkalinity as they can guzzle each as they grow

 

[Matty P]

I have a derasa clam with 2x MH & 2x T5's.

 

[dazussdj]

Silly question but with clams have you found out your magnesium goes down in the tank. mine seems to hover around 1110 when im putting supplements into it. Calcium stays around 400

 

[SkiFletch]

Nope, mine stays around 1240ppm