My tds is 58ppm with my 10 gal res

my tds is showing my 10 gal res with no nutes and just distilled water at 58ppm can the rockwool offset it a little?

barely but sure, anything added to the mix will offset ph and ppm..

so when i start my nutes i have to factor in that ppm when testing the ppm of the nutes

distilled shouldnt be 58 ppm, did you rinse the clay off you're hydroton? clay dust will raise your ppms and nastify your resivor.

You must have a really good meter to measure less than 100parts/million. I'm impressed. VV

lol... he probobly has the same meter i do, it's actually not that great. 39.99 for one, reads 0-9990ppm.

9990ppm? what the hell are u mixin up over there man??? lol i gota cheapo from ebay. i think it was like 10.00 with shipping and only reads up to 1999, but i bought 2 just incase. when i was useing RO water it would read as low as 5ppm.
and i may be wrong so let me know if i am, but when you have a starting PPM of say your 58PPM you divide that number in half and and that to your total PPMs to figure what nutes to add. example (58 divided by 2 is 29, so if you are shotting for 1000PPMs you mix to 1029PPM and that will give you dead on 1000PPM of nutes)
but really who is going to worry about that small of a PPM change.im useing 145PPM tap water to start my nutes, and havent noticed the plants doing any differently than the plants i grew in 5PPM RO water.

u guys are awesome thanks i have a hm tds meter i bought it for 20 bucks on ebay i washed the hell out of my hydroton i have a little bit of residue but my water is very clear i have a journal in the journal section So 58ppm isnt that bad then