hose end sprayer/fertiliser for vegetables?

REMF33

Does anyone use one of these for tomatoes and vegetable plants? Presumably I'd have to buy granular/soluble tomato food... but then how much to use? It's taking me a very long time to feed all my vegetable plants using a watering can... I am wondering if there is a reason not to do this, as you'd think, if it were a thing, they'd try and con us out of our money by marketing a separate special tomato one.
(I mean this sort of thing btw. https://www.amazon.co.uk/Miracle-Gro-Feeder-filled-Purpose-Soluble/dp/B000TAW92S)

Pete.8

The dilution rate for most of the soluble and liquid plant feeds I've used over the years is, as far as I can recall, is 5g per litre of water or 5ml per litre of water or thereabouts. So I'd think you could use most fertilizers with it.
I did have one years ago and it leaked really badly, so did the replacement, but I only used it for miracle grow and it was a different design to the one on Amazon now.
I also found that at the start of feeding the spray was very blue and got much lighter after a while, so not sure how accurate they are.
I don't know if it's suitable for a liquid feed either.
You could ask the question on the Amazon site

REMF33

Thanks, Pete. Good thinking re asking on the amazon site.

Pete.8

Here's another one to consider - 
https://smile.amazon.co.uk/Birchmeier-Fertiliser-Mixing-Aquamix-11859901/dp/B004I68IW4/ref=sr_1_1?dchild=1&keywords=Birchmeier+feeder&qid=1626682745&sr=8-1

Following a question from another forum member-
https://forum.gardenersworld.com/discussion/1056581/using-a-feeder#latest

REMF33

Thanks @Pete.8