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Re: [APD] Aquatic-Plants Digest, Vol 50, Issue 21

> I made my own 10W aquarium heater for example, temperature controlled, etc. 
> out of a test tube and a few resistors and semi-conductors.
> I love finding out about chemicals and how to make them do something not 
> mentioned on the label. A lost art these days.

If they will even tell you what is in there any more.  It's all proprietary ingredients like, you know NaCl or something...

Nick A
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