I cant get the things to stay in! Haha i gota few to but there a few stuborn ones... I used really fine gravel for substrate anyone got any ideas to keep the pants down?
i'm guessing you don't have enough substrate .... no matter how fine it is, if it's 2-3 inches deep, there should be plenty of weight for it - otherwise, use a small rock to tie it to or lay a sub - base...