BCS:Hi Fins,
We used to run into problems here in the Great Lakes when we would take our video housing from 95' F w/80% humidity on the boat, load it and close it. Then drop down to 37'F water at the bottom. The inside of the housing would fog terribly. I have tried the dessicant w/little to no luck under the same conditions. What I did find that works well was to purge the housing w/the very dry gas from our cylinders. Right before locking down the housing, place a second stage next to the back hatch of the housing and purge for about 30 seconds. Make sure that you have NO water in the second stage as that would be sprayed into the housing and make this pointless. Use a nice dry second stage and purge it for about 20 to 30 seconds before purging the housing. Then purge the housing and lock it down. This cured our condensation problem and costs nothing.
brandon
Thanks Brandon,
Gotta love those free solutions. Now at the rate I suck air down I'll just have to find someone else's tank to do this from
Mark