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Re: Aquatic Plants Digest V6 #228

The one thing I do not ever adjust is the needle valve. Once set, it stays set.
Usually I waste the CO2 when cleaning my reactor, or I simply shut off the main valve on the bottle.

Michael Eckardt
"You can only learn from the lazy."

At 04:41 AM 7/19/03 -0400, you wrote:
A cautionary tale.....

Yesterday I noticed my Eheim diffusor needed cleaning for the first time in
3 years, so I took it out and cleaned it.   Prior to removing it, I shut
off my needle valve, so naturally I needed to readjust it putting things
back together.   I set it too high, then too low, then when I was getting
closer to just right, I was distracted.  I forgot about that task until
this AM when I noticed my fish were gasping at the surface.  I soon
discovered a cascade of bubbles coming out of the CO2 diffusor, so I shut
off the needle valve.  Now I have a few dead fish (from suffocation), an
airstone running (to diffuse the excess CO2), and a valuable lesson:  be
darned careful when fooling with something potentially dangerous to your
fish.  Don't just walk off and forget about it, even unintentionally.

A word to the wise....