im not that expert..but i think isnt it that the bio balls are good at changing the ammonia and nitrite to nitrate, but then it just stops there and doesnt go any further?...then that will leave nitrates in the tank which promote algae and algae battles with the corals and kills them off? i believe thats the reason. and the live rock i guess gets rid of nitrates i would guess?..but i dont know how correct i am, just thought i would see if i have the right info
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