70w MH good enough for croceas?

[jafoca]

I have had a crocea for about the past year in a 12in deep tank with a 150w hqi halide light.

I have recently "upgraded" tanks to an all in one bio cube.

I modified the crap out of the hood to fit a 70w HQI halide into it, and now my clam (and his new friend) sit about 7 inches below the halide (in 3-5 inches of water), high in the rockwork. The bulb is 12 or 13k, don't remember.

Anyhow, will this be enough light for these guys? If not I could transfer them over to my frag tank which has 4x39watt T5HO, but it doesn't even seem as strong as the halide...

Thanks!

 

[ezcompany]

imo, we need more data in regards to keeping clams under 70 watt metal halide bulbs. i would think it is BARELY enough if @ 7 inches, then again you have all these people claiming horrific success under power compacts. ultimately watch your clam, and she will tell you if she has sufficient light or not. watch for coloration change and mantle extension. please keep us updated with your experience, as i plan to post a new "write up" on lighting requirement of clams in the near future.

 

[jafoca]

well, i have to say there has been some coloration change since it has been under the new light.

I think this is due to improper light acclimation... I didn't really acclimate at all =X

This ****ed the clam off for about a month, then I lowered it a bit and now its color is returning to normal.

I am thinking it will be enough light, there are also 2x36 watt PC lights in the system.

 

[Schadiest1]

Do you have any pics? I have a 70w halide also and want to get a clam if possible.

 

[team2jndd]

How big is the tank? Dimensions?