HK 乾燥海洋礁石 ** 9-12 公分 ** 小 (每公斤)

The mineral release is exactly what my hard water cichlid tank needed; each piece has great texture and crevices for hiding spots. Rinsed them well and they didn't cloud the water at all.

Picked up a kilo of these for my African cichlid tank and the 9-12cm pieces are perfect for building stable caves. The rock structure is very porous, which my fish love hiding in, and after a few weeks the minerals have helped keep my pH steady where I want it.

These rocks look great in my hard water cichlid tank and the 9-12cm size is perfect for building stable caves. They definitely release minerals like described, so my water parameters are exactly where they need to be.