Using a chain for bending my plant, good or bad idea?

As the title says...my biggest girl is getting too tall for her current space so I had to bend her down....and the only thing handy was a chain that you use to hang a 4 foot CFL tube thing...will that hurt my girl? It's holding my plant about 2 inches below the cola to the wall, slightly bending my plant down to get more light on the cola. Is using metal a bad idea?
 
Just watch out that whatever its hooked to isnt too tight and the plant grow around it, I used cut up and bent coathangers as stakes to LST my young plants, and the stems grew so thick so fast that about 5 of them are now part of the various plants.
 
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