unless you have intentions of leaving the anemone in the fuge its not a good idea to move it there. At some point its going to attach itself to a rock or something else inside your tank in the location that it likes best and moving it around is only going to upset it. better lights will go a long ways. What color is the anemone BTW? it should be a strawberry type of color with purple tips. Most lfs sell them as a solid white anemone and thats not their natural color, its bleached from poor lighting. If your clarkii already feeding it then you should be on your way to some good growth. I noticed that mine "lost" its food too before it recovered from the poor lighting of the lfs. As it darkened, it became more reactive to food and more "sticky" which was the nematocyst's working like they should.