LF a good 2 or 3 part doser

[Ron99]

I had a Bubble Magus one years ago and it was ok. it worked but wasn't easy to program and it didn't feel like a quality product. But it was cheap and functional. Been using a Vertex Libra recently and it's a thing of beauty. Very easy to program. And they are working on an upgrade that will simplify your dosing calculations too which will make life even easier for most people.