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Kalkwasser Doser-Reactors
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 | This is how I made a simple, cheap dosing pump for myself. I use it to automatically add the proper amount of plant fertilizer every day. Currently I only have to fill mine up once every three months. Laziness is the mother of invention! - [Details] |
 | It's a simple idea, but it serves me well for dripping kalk into my 30G tank. - [Details] |