Discard-A-Stones are disposable plastic air diffusers with reusable inserts for attaching airline.
They are an excellent aeration device for use in under gravel filters, corner filters or just as decorations.
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Discard-A-Stones are disposable plastic air diffusers with reusable inserts for attaching airline.
They are an excellent aeration device for use in under gravel filters, corner filters or just as decorations.
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