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So few years ago, I used some bio media balls and heard it was leeching aluminum so I pulled them all out two years ago. Now I have a newer tank and want to add some into the sump since I don’t have a lot of live rocks in.
what brand are hobbyist nowadays use that is supposed has no aluminum leeching?
thanks
what brand are hobbyist nowadays use that is supposed has no aluminum leeching?
thanks