Schedule feeding by the weight of coco?

Howdy folks!

I was wondering if any coco growers feed their plants just by the weight of the coco pots?
Like if your pot wheighs lets say 10kg fully saturated what should the weight be that you would like it to be most of the time?
And now the reason why i'm asking.


Im just tinking of programming it so it would start the pump when it gets under 4kg.

Randomly clicked on the vid and now i'm thinking maybe i can use it for my automated feeding poject.
Still don't know about the prices on those things and controllers n' stuff but i thought i'll ask you guys first THAT WAT DO YOU THINK ?

Is it worth diggin'

And maybe adding a delay for next feed so coco can dry a little after few feedings...

Honestly man I'm currently running DTW in coco with 30% perlite, I'm in week 7 on a 10 week strain my lights turn on at 9pm off at 9am, and I feed once at 12am - again at 3am - again at 6am late in flower, if I don't feed multiple times a night I get deficiencies, each feeding is 1 litter exactly at 1400ppm's and I'm running though 33 litters of water a night in DTW so what I'm trying to say is in veg i usually feed according to the weight of the pot but in flower depending on the week I'm in, I don't feed depending on pot weight I feed depending on how much feedings my plants need to stay healthy, I treat DTW coco exactly like hydro. Good Luck