Penn Plax Pro-V Decorative Aquarium Waste Adsorbing Crystals help absorb waste making aquarium care hassle free. The beautiful blue and white crystals naturally absorb ammonia and reduce waste. The crystals will blend in with any aquarium gravel and are ideal for Betta and Goldfish bowls.
Internet Price: $3.99
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$5.99 to $37.79
$10.99 to $30.59
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