hey guys im getting some L-260 and Hypan Sp. "Lower Rio Xingu" with intentions of breeding them . they already are of breeding size so i need to get some caves . since idk where to get them , i will make them out of pvc , and then im going to spray paint them black . the thing is , is idk what size to make them out of . i was thinking of using a few 1.5" diameter ones and some 1.25" ones , but im not sure . let me know what you guys have used or think , thanks !