Suggestions please

I take it they are not harmful? I don't have good lighting yet just a regular bulb that can't support coral at all so how does it grow?
 
no harm. i prefer these in my sump and skimmer pump over dusters....gives it that 'alien-deep-sea-thermovent' feel. LOL
 
Hey thanks everyone. Makes my fiance and I feel better. Especially her because I'm the one who started the tank and she is taking care of it for me while I'm away.
 
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