Aquarium pebbles in the 4 mm size range are a versatile substrate option, ideal for providing stable root support for live plants and a comfortable, safe environment for most community fish species. Pebbles of this size are small enough to prevent large pockets of uneaten food from getting trapped too deeply, yet heavy enough not to get easily sucked up during routine siphon cleaning.

Safety: Undyed and uncoated, keeping it completely chemical-free and safe for sensitive environments.