Silica Gel Indicating Type
 

http://www.desican.ca/silicagelblue.htm

Does anybody know where in Vancouver i can buy this staff ?
thx.

silica gel source
 

LOL, I go through about 10 pounds of the stuff a month.......For my cat. Walmart sells it as a kitty litter complete with color changing beads. $14 for about 10 pounds.Hope that helps.

got me wondering where you would use it in a reef?

I have those in capsuals i place inside my underwater camera so that when moisture is present, it changes colour and you just change it when it turns a certain colour. Available through most scuba stores in packs of 12 and about 1 inch tube.

He probably wants it for his ozone air dryer

Hey thanks man !
I will check that out.
Oh yea, i did want it for my ozonizer. However i dont have one yet. I got one from OA and it was too big for my system eventhough it was controllable still it would make ORP go from 300 to 480 in 30 minutes on smallest output.
So i am looking for a smaller ozonizer unit now.