Hello everyone and thanks for your help about my water quality/temperature questions, I'm grateful as I'm new to marine. Also glad to hear TONMOCON went so well, and jealous of eveyone who went. I got a tour of MBARI a couple years ago with my UCLA Marine bio professor, and I remember someone who worked there discussing the live vampyroteuthis they used to house there for observation, really incredible stuff. Have spent hours watching the Sepia officionalis at the Monterey aquarium too, it's what really got me interested in them. I have a question about bioload and bivalves. The other day I bought some "green mushroom" cnidarians for my cuttle tank. After I put the rock in I noticed the cuttle kind of reacted to it - looking at it and even nudging it. The more I looked at the rock, the more it became apparent that it wasn't really a rock. It was a big clamlike creature encrusted with living things. It's bigger than the cuttle! My concern it about how much waste bivalves produce. I thought that as a filter feeder it might actually help filter out proteins and waste. Giant clams can even consume more nitrogenous waste than they make, but this isn't tridachna, it's something unidentified. If it's going to be a toxic waste factory I don't want it polluting the tank. The second question is about cone shells. There's a real little one that came in with the live rock. I like it, it makes a beeline for any uneaten crab parts and gnaws on 'em. But when it gets bigger could it be a threat to the cuttle?