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Lee's Discard a stone is an excellent aeration device used with corner filters, under gravel filters and decoration. These stones are disposable air diffusers with reusable inserts for attaching airline. Available in both fine or coarse stone. Lee's Airline BFA Item # Discard-A-Stone 6/pk LE12520 14500
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🇺🇸 Ship from USA · On Agora since 2026
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