<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On Jun 7, 2006, at 2:39 PM, Stan Kroeker wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">If this works (the reservoir would have to be perfectly level, of course), you could simply mark a line on the watering can to indicate the 'top-up' amount.<SPAN class="Apple-converted-space"> </SPAN>How close to the top of the tank do you dare to fill, Fred?</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Regards,</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><BR></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Stan Kroeker</FONT></P> <BR class="Apple-interchange-newline"></BLOCKQUOTE></DIV><BR><DIV>The way I've always done it is to watch the lights as I'm pouring the water. When the light stops flashing, that is the point at which the tank is exactly one full watering can low. Stop filling, go fill the watering can back up to the fill line and finish filling the tank. Fool proof. No digital sensing devices needed.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Of course, right now, I only have the units in teaching studios and the profs will fill the tanks as soon as the lights come on because under the bass edge of the keyboard the flashing lights are distracting to the player.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>(and even in these high humidity summers the tanks need filling more often than every two weeks -- more like a week to 10 days.)</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Jeff</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV>Jeff Tanner, RPT</DIV><DIV>University of South Carolina</DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></BODY></HTML>