sorry if im asking loads of questions in this section, just trying to fill the void.

E.C. C.F. T.D.S.

I know these refer to the amount of nutrients in water, but are they just different units of measurments eg feet/meters?

If this is so is there a conversion chart kicking around?

Or are they different types of measurements?

Thanks again

Bob

ec and cf are easy.....both measurements of the electrical conductivity of a solution ,cf being greater by a factor of 10 ,i.e. ec1.0=cf10

tds is a bit harder...measured in ppm (parts per million) its derived from the electrcal conductivity measured but then converted into a ppm figure to give a reading.the conversion depends on the factor emplyed by the manufacturer.
basically its a guess coz no one knows what makes up your nute solution its different in everybodies tank,some pens will be calibrated to meausure the concentrations of swimming pools for instance ,obviously a totally different chemical mix to what we use for hydro .

stateside they will often quote ppm and alongside the conversion factor used,far easier to stich to either cf or ec imho

hi bob

i asked the same question a while back as i wasnt sure what was what

it goes something like

ec of 2.0 is cf of 20 and so on .

peppi

ahh, simple! cool, i was just wandering to fork out more to get a t.d.s. meter.

Thanks guys!

You awrite there Bob....it all seems rather daunting eh....youll be fine mate its like growing by numbers tbh..dunno if this is what your after but heres a chart anyways good luck with your new adventure!

http://www.uk420.com/boards/index.php?showtopic=26929


s.e.t

wow set thanks for finding that, i learnt so much! that is one fecking awsome post, if it's all accurate is needs to be pinned!

high bob
if this helps you
cf=28
ec=2.8 (just remove decimal point)
ppm = 1820
hope this is of some use to you.
ps. welcome to the world of hydro

thanks, i weren't too sure either!