[quote author=bayareaquarist link=topic=5301.msg65888#msg65888 date=1227553332]
When chlorine "evaporates" it leaves behind one caustic element and one other element that our tanks dont need. Sodium Hydroxide (NaOH) -being the caustic and table salt or Sodium Chloride (NaCl). The white powdery substance left behind is a combination of the two.
Both of these elements affect precipitation with these two specifically impacting PH and precipitation values...not to mention the rise is salinity from The NaCL...I just don't like taking chances so I rinse, rinse, and re-rinse anything I clean with caustic chemicals~!
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To each their own.
I rely on the extra rinse cycle like Aldie, again never had a problem on any of my tanks that use socks, go figure. Actually when I worked for a service company before I started my own, my boss would routinely dump coral back into tanks while they still reeked of bleach. Back then we used Genesis to dechlorinate, if he felt there was a little too much residual, he'd just throw a little Genesis int the tank ;D