Luis and I make a Night Dive across the Tower 2 Algae Patch

Met Luis in the South Beach parking lot a little before 6:00 pm.  We got in the water pretty quickly as it was getting dark. I could barely make out the swim buoys by 6:25 pm and there was no chance we could track our bearing to the Jacks. We descended and made our way more or less to the East across the algae field. Got into 22 ft of water then came to the tiered ledge, but we weren't where we usually are to get on the Jacks. Luis spotted a young green turtle who hung around us for a bit. Also spotted a large crab. Kind of a nice dive there, but we could have skipped the 600 yard swim to get there. The effective closure of the beaches North of Sunrise and recent high winds have caused me to severely cut back on my diving.  I now lay around and, bored, eat too much. I've put on some weight, maybe 20 pound. I was not well weighted at 10 pounds and my gas usage suffered:  RMV of 0.47 ft3/minute.  Dive Time was just a little over 90 minutes; actual consumption was 27.46 psi/minute at an average depth of 17 feet; SAC rate of 18.13 psi/minute.