Inquiring mind want want? OK! Will get: they are crystal balls made of special biological filter materials, which are extremely porous and will absorb dirt and debris in the water - converting toxic ammonia into non-toxic nitrate, thus turning the water into a virtually bacteria free environment and enriched with dissolved oxygen.
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How do the blue balls give him oxygen? Inquiring minds want etc etc.
Inquiring mind want want? OK! Will get: they are crystal balls made of special biological filter materials, which are extremely porous and will absorb dirt and debris in the water - converting toxic ammonia into non-toxic nitrate, thus turning the water into a virtually bacteria free environment and enriched with dissolved oxygen.
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