Tap water and PH down effect on total PPM reading

Hello everyone,

If I need to feed my plant 500PPM and my tap water is 50PPM and my PH down also has about 200PPM do I set my final read at 750PPM (500+200+50)?

Thank you

you set your ppm at 500

I see, somehow I though you should not count them in the total PPM

Thank you.

yeah what are you using for ph down?
that seems like a lot.

I read total ppm. Its not like that 50 ppm in your tap or 200 ppm from ph down dont exist in your water because theyre not part of the ppm from your nutes.

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This is what I use http://technaflora.com/indexProduct.php?ID=114

My tap PH is about 7.8 I need 4ML per gallon to get the PH to 6

JUST FOLLOW THE FEED CHART ON THE BOTTLE
It should have a ppm rating on there
if any thing always give under unless you know the strain can take it

My well water is at over 100 ppm at 50 your more then fine
edit also your 4 ml per gallon sounds exactly right