HK 乾燥海洋礁石 ** 13-20公分 ** 中型 (每公斤)

I was worried these rocks might leach too much, but they've actually stabilized my water chemistry nicely for my hardwater cichlids. The 13-20cm chunks stack really well to create solid caves and ledges.

The 13-20cm size is perfect for building a natural slope without needing tons of pieces, and the rock texture gives my hard water cichlids plenty of hiding spots. It does leach minerals as stated, so I’m glad I tested my water first—my shrimp tank would’ve been a disaster.

These rocks have been in my hard water African cichlid tank for two weeks and my pH is holding steady. The 13-20cm size is perfect for building a nice structured scape without being too heavy.