●The products include Volcanic stone / ammonia ecological stone / activated carbon / bio-beads / ceramic rings six kinds of filter material. You can choose one.
●Five kinds of filter materials, comprehensive filtering, improve water quality, purify water, inhibit algae, stable PH value, remove sterilization, in addition to the stench, accelerated nitrification colony forming.
●Promote fish metabolism and expel harmful substances from the body. Effectively increase the amount of oxygen dissolved in the water. Removal of harmful heavy metals in water.
●Can be extended water changes time.
●Maintain the water clear.
●Rendered neutral PH value, will not change the water quality.
Material: Biological Filtering Material
Color: As picture shown
Weight: About 196g
Quantity: 1 Pcs
Model: 1#-Volcanic Stone
2#–Ammonia Ecological Stone
1 x Biological Filtering Material
1.Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand. Make sure you don't mind before you bid.
2.Size just for reference. Please allow few differences due to manual measurement.
you can track your packages after an order has shipped.