natural volcanic rock stream stone package particles ancient fish farming aquarium fish tank scenery decoration natural fish tank sand bottom

[water purification and oxygen increasing combination] oxygen increasing fast/fast purifying fish tank water quality

[2.00kg package a]: 1.00kg water purification stone +1.00kg boutique stream stone [2.00kg package b]: 1.00kg water purification stone +1.00kg boutique stream stone [5.00kg package a]: 2.50kg water purification stone +2.50kg boutique stream stone [5.00kg package b]: 2.50kg water purification stone +2.50kg boutique stream stone [10.00kg package a]: 5.00kg water purification stone +5.00kg stream stone [10.00kg package b]: 5.00kg water purification stone +5.00kg stream stone [7.50kg] package b: 5.00kg volcanic rock +2.50kg stream stone