I thought it might be cool to tie wrap some silk plants to the inlet tubing of my filter (the shaft, away from the actual inlet) to cut down on the unnatural appearing items, since I've decided I want two heaters instead of one. Is this going to poison my fishies? They're made of some kind of nylon I think, they even have green ones, but I think I'd be even more apprehensive about whatever is used to make them green.
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