High ppm out of the tap ?

The water out of the tap is running about 300 ppm. If I want to run a nutrient solution of 1000 ppm should I read 1300 or 1000 on my meter? I have also read anything over 200 should be filtered thru a RO system. Al B Fuct, who obviously knows his shit, says high ppm out of the tap should not be a problem. Gonna try this grow without RO. Light em up!!!!!!

Yep. measuring for 1000ppm in nutes requires you to combine the two for 1300. 1000nutes + 300tap = 1300ppm total.

High PPM isn't too bad, nor is high PH. Mines 145ppm/8.4 PH. Just make sure that your PH is correct for your method of growing.

Lastly, why are you running 1000ppm if your not sure how to combine tap+nutes for PPM? just so you know, 1000ppm is quite a bit. I used Al B's 1400 @ 5.8 rule and found out how quickly 1400 will roast small plants.

If this is your first go at things, start off at 200 and gradually move up. Nute burn is pretty rough on em. Just be forewarned!

I think a lot of it is calcium and other things that the plant uses. Of you look on your water provider's website, they should have a report of what's in the water. I think it's required by law. There's a lot of scary things like arsenic and lead in most tap water, but these are naturally occurring elements that are also present in ponds, lakes, soil, so not to freak out. Most plants don't accumulate these elements.