pat w

Originally Posted by pat w

I'm gearing up for auto dosing. Previously I dosed KNO3,KH2PO4, and CSM+B as per EI recomendations, dry, but now I need to make up stock solutions (2) to feed my doser. I tried using Wet's (very usefull), APC's fertilator, Chuck Glad's, and Nutricalc. They all helped but I still had to do some paper and pencil work.

Now I'm no wizard with Excel but I can generate a formula when I need to so I thought I'd try my hand at a spreadsheet that would allow me to design any stock solution

...

.
.
Recently, I entered a discussion on APC targeted at creating a low cost auto dosing solution. All of the proposed systems (including mine) were, to some degree, clumsy and subject to errors in accuracy that I though might be prohibitive. Still, it was a fun exercise trying to concoct a cheap, easy, and accurate dosing system. In the middle of it all an APC member named Andy Ritter mentioned the success he had found with the use of medical infusion pumps. I had seen these before ...