<a href=showthread.php?s=&postid=7050011#post7050011 target=_blank>Originally posted</a> by DocReefer
About the plastic rose piks. FYI, I used them a few times and you'll notice they have to be weighed down. So, I put some aquarium sand in the pik and found the frags started dying. When I removed some of the dead frags and popped the pik top off; ohhhh what a smell. I guess the lid provided a great anaerobic environment for hydrogen sulfide-producing bugs. Apparently other people have had this problem as well. So, if you're going to use them I would make sure the hole in the top is completely obliterated so gases don't kill off your frag or, find another medium to weigh down the pik.