Ppm/ec readings help!!!!

Please help when I add my canna coco a+b to my water and add ph down to 5.8 my ppm/ec readings decrease
how to I stop it from doing it or is it fine help!!?

i dont understand what you mean, when you add canna A&B your ec will go up not down, explain what you mean better, are you sure your reading the ec meter correct

Defo reading right hear goes I have 10 liters water I've added 10ml of canna coco a and 10ml of b
im still in veg so I'm building up to full strength anyway onece I do that I check ppm and it reads 400ppm
now I ph to 5.8 check the ppm again and it goes down to 200ppm I no it sounds strange but that is what's happening
its a brand new truncheon meter that calabrates it's self so Im assuming it's correct mate

Sounds like the ph down is fucking with your ec meter. I would keep doing what you're doing. Check ec then adjust ph afterwards.