Basic question about mixing nutes and in tap water

[jnt62]

Hello
Do I need to measure EC before starting to mix my nutes to subtract from future readings as I add nutrient and water mix to the reservoir?

Thanks

 

[Chris Scorpio]

If you base all yer levels on ec/ppm then yes

Water ppm is never figured into nute charts from manufacturer because it's an unknown factor

 

[jnt62]

If you base all yer levels on ec/ppm then yes

Water ppm is never figured into nute charts from manufacturer because it's an unknown factor

Thanks Chris. I assumed that was the case... When I couldn't find anything definitive after a few searches, I just had to ask.
Thanks again

 

[Pinktiger777]

We have hard water, 225 or so ppm out of the tap. I don’t subtract because I didn’t start that way. I follow the schedule GH gives for hydro and I’ve learned what to look for.

 

[TorturedSoul]

Do you use Hard Water Micro or the regular (assuming you're using GH's three-part Flora series)?

 

[Pinktiger777]

Do you use Hard Water Micro or the regular (assuming you're using GH's three-part Flora series)?

I use the regular. When I runout I’m switching.

 

[Bush Doctor 77]

We have hard water, 225 or so ppm out of the tap. I don’t subtract because I didn’t start that way. I follow the schedule GH gives for hydro and I’ve learned what to look for.

My water is very hard, and I add rain/RO to get it around 200ppm TDS. I use Sunshine Mix and the GH nutes schedule and don't even measure pH or TDS any more. I do use hard water micro.