High Kelvin rating bulb for clams? OK?

[sahin]

Currently I have on my tank a 150w HQI with 78w T5. I am upgrading to a 250w HQI with 39w T5. However the currently MH bulb is a 10K Ushio. I am getting a 14K Arcadia bulb for the 250w unit.

Is this sufficient for clams such as Croceas? My tank is about 45G (excl sump).

 

[mantisshrimp]

I'm using 20k 150 watt HQI,they should be fine.My clams always have new growth.