This is a 3d printed cave designed to increase the habitat space in the tank while also providing you space to isolate the encrusting or zoa style corals it is printed in a fuzzy skin outline to aid the encrusting of the coral. 

size of the large is 145x115mm

All printed with reef safe materials 

if any magnets are supplied they are also reef safe and coated these will not be hidden within the 3d print, if one does begin to corrode you can easily spot it. these are 3d printed and some imperfections may be visible