So here's a question for all you pro's out there. Are these safe to use as the pulleys above my tank that will suspend the lights? They are rated for 110lbs each (according to the package), so weight isn't an issue. My biggest concern is the metal they are made from. It doesn't say anything specific on the packaging. I am worried about flaking metal into the tank after repetitive use. Am I being to concerned? If you think they are an unwise choice, could you suggest a safe pulley alternative?
Cheers,
Scott