BTA- confused on lighting

[yakfishin]

I have read where BTA's will move to location in the tank that has desirable conditions for them- flow, lighting, suitable crevice to place their foot...etc. So I'm confused on 1 thing concerning lighting requirements. It would seem to me that if a light is strong enough for one in a 16" deep tank, then the same light would be ok over a 32" deep tank, if taking into consideration that the rockwork on both tanks approach near the top water line. In other words, if an anemone is under a suitable light that is 10" above him, does it matter how much more water is then underneath? I can understand if they have a habit of searching for the lowest part of the tank to take up residence that you would need the lighting to be strong enough even if he were to attach to the bottom substrate. It just seems to me that you could keep one in a swimming pool if you have enough light at near the surface and rockwork that approaches the surface- given that they will move to an area that they find has suitable conditions. Is this wrong?

 

[Random Aquarist]

Your anemone will stay near the top of your tank. It's all good.

 

[tydtran]

You're absolutely right. Provided you have lights emitting the same spectrum, weaker light means the animal has to move closer to the source and stronger light means that it can move farther away. If you change your depth and keep the light the same, it should be just fine.

 

[yakfishin]

ok- that's what I thought.

 

[prncalbrt]

my carpet has never moved off the bottom of the tank, it moves around in about a 10 inch area but never off the bottom

 

[Random Aquarist]

What kind of carpet is it? It could just be a sand-dwelling species.