Review on Plecoceramics Natural Large Aquarium Cave Ceramic Decoration: Perfect Snag Fish Tank Hideout for Plecos and Cichlids by Rui Hanson

Not safe for marine aquariums. They contain no warnings or disclaimers. SN (tin), a heavy metal, was found in my Triton water samples. First 4 µg/l, then 5 µg, then 6 µg, then 8 µg for 3 months. I couldn't figure out what the tin leech was. I replaced the powerheads and other gear, but what was left was this trashy, poisonous ceramic cave. I lost $300 worth of coral and spent months doing massive water changes while trying to fight the can and find the source. Triton told him to remove the ceramic cave. This company is a scammer and stopped answering me, didn't bother to refund my damage, one day I told them I bought another of their caves, tore it up, put it in new salt water and left and then sent the sample to Triton, who confirmed that it contained a lot of tin.