Lionel, Nice looking tank! I wish I were down in okinawa with you guys, seems like the reefers are MUCH more active down there than here on the mainland. I have a question about your DIY Kalk reactor. How did you attach/seal the 1/2 pvc input and output for the mixing pump to the large piece of pvc? I have been trying to figure this one out myself for a while. I was at the point of buying uniseals, which I did buy, but I don't think they will be leakproof. Lastly, the way that you DID attach it, however that was, can you also do it PVC to acrylic, or is it just pvc to pvc?