<a href=showthread.php?s=&postid=7432099#post7432099 target=_blank>Originally posted</a> by ghostrida3 no u dont need bio balls plus they cause excess nitrates.
agrre they seem to be a nusance anymore. should I remove them slowly over time or just take them all out at once? I dont want to throw anything out of whack just get rid of the phosphate trap. How about the sponge can that stay?
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