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    • ARGIDO – The premium brand for clay products in aquaristics
      • Front entrance caves
      • Side entrance caves
      • Catfish ceramic tubes
      • Igloo caves
      • Special caves for specialists
      • Leaves & barks – Decoration & hiding places
      • Other useful clay products
      • Useful accessories for aquarists
    • AquaKeramik – Caves for axolotl, fish & co
      • Igloos
      • Igloos for Axolotl
      • Tunnel for Axolotl & others
      • Tunnel for ornamental fish & invertebrates
      • Shrimp trunks
      • Planting aids
      • Feeding aids
      • Decorative leaves
      • Crab caves
      • Front entrance caves
      • Side entrance caves
      • Central entrance caves
      • Spawning tubes
    • EBO Premium Fish Food
    • NATURDO – Leaves, barks & redmoor wood
      • Spiderwood
      • Teawood
      • Alder wood caves
      • Indian almond – leaves & barks
      • Alder cones & Leaves – Walnut, Guava, Banana, Mulberry…
      • Fruit capsules as hiding places
      • Cholla cactus wood
      • Pure Gammarus
      • GrowScape planting mats
    • TEKNIDO – Air lifters, incubators, breeding boxes, diffusors…
      • Free floating breeding boxes & Fish & Shrimp Incubators
      • Air lifters & Pressure cells
      • Diffusors
      • Aquarium filters
      • Aquarium heaters
      • Aquaristic pumps
      • Spare Parts & Accessories
    • Fish feed & Shrimp feed
      • SAK Fish feed & Shrimp feed
      • NATURDO Gammarus
    • GRANOFLOUR® Natural sand – Aquarium sand made of pure hard rock
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    • Slate caves
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      • FERMENDO®water plant fertilizer & care
      • GrowCap® fertilizer capsules
      • Water care
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Home / FAQ / On some clay articles are white spots. What is it and is this harmful?

On some clay articles are white spots. What is it and is this harmful?

These are traces of fire clay brick of the kiln. It isn’t harmful. Just wipe it off or brush, should it visually disturb.

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