Our water keeps tannins in it even running seachem carbon. Been reading on polyfil. Is the safe to run in refugium for cleaner/clearer water? Always seem to have small particles floating in the water.
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Notice any differences?I use polyfil
I'm going to try it on top or bottom of my foam filterYa I'll catch fibers in return nozzles every once in awhile. I haven't found a solution to that yet

