Won't it break free from those like it did the feeding rings? I had it strung through so that it was half on one side (a good 10") and half on the other (another 10"). But it basically broke in half where I had it strung through so now I have a bunch of foot-long (or so) hornwort that attacks my fish. I'll see if I can try weights. I'm pretty sure I have lead fishing weights around my house somewhere. Either that or I can attach it to some of the quartz rock that I have in there. I found a few small-medium size quartz rock (smaller than fist size) in the yard this weekend that I'm going to clean and add to the tank, so maybe I'll use that to weigh it down... we'll see how long it stays put. lol