Barrons Hut is one of those dive sites that we just want to keep coming back to.  We had not been here since January and had been keen to re visit for a while.  The seas had been against us.  On this day though the seas were great.  We had planned to dive on Nitrox but found that our Nitrox cylinders had 180 and 160 bar respectively.  We don't know why.  We equalised them with a special hose with appropriate fittings that Wayne had but it still was not enough for this dive.  We dived on air.  We hit a maximum depth of 26m, average of 17m (due to our deco time) and a total dive time of 61 mins.  This was dive 235 for me.  It was superb.  The water was so clear that we could see the boat on the surface at 23m depth (see photos).  We had  a large bull ray at the start of the dive.  It swam away as we approached.  Besides the normal prolific fish life we had a large turtle swim with us for about a minute.  It came up behind and to the left of me then continued to swim slowly south.  Turtles this size are rare in Sydney.  There were many large schools of fish including old wives, trevally, bullseye and lots of smaller fish.  The fans were impressive in their colours. In fact everything was great.