The shaking method is terrible, you have to shake it for 10 minutes with near boiling hot water, and even then you may have some sediment on the bottom.
My first automation was using a milk frother, which worked fairly good, but was only good for smaller batches
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I now use an old food blender, which works like a charm...... you can pick up an old used one for 10 or 15 bucks
Mine is a 35 year old Sears Kenmore, which I use for nothing else but mixing my nutes.
I use 1 litre of hot water, add about 11 grams of Maxibloom, then mix for about 60 seconds..... add the mix to 5 litres of cold water (plus 6 ml of Cal-Mag & pH+) to make my 6 litre batch of feed
BTW: this is a brand new bag of Maxibloom, which is a much brighter red than the previous batch...but it seems to be a much finer grind, so it should be easier to mix
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