pH / EC / TDS / PPM

[sxyross2005]

wow so much info for my wee brain to take in but i think u have covered everything i need to know thanx m8 keep up the good work

[lkdj2003]

No problem at all lads im glad to be of help.

[dekay]

Bloody hell that was a good long read, informative n interesting but i feel even less likely to start my bubbler now, I dont mind maths n equations but soil is so easy n I rather lazy git since me first grow finished.

[PHplumber]

Im a little confused.This is my second go at growing hydro.The first grow was pretty good considering I had no meters but I kept the ph in check.This time I have tds meter,but Im confused on the meter themselves.I thought that tds stood for total dissoved solids,I did know that it was a measserment of the nutes though.The ppm i understand that,I dont understand is if the two can be converted over on a chart like the ec,cf and tds.
ex.

mS-cm(sqared) EC CF PPM500(TDS) PPM(700)
1.0 1.0 10 500 700
1.1 1.0 11 550 770
1.2 1.2 12 600 840
And if this is true you only need two meters PH and tds Right?

[GSXRnutter]

I would say thats the only 2 nute meters you need, possibly a thermometer to measure water temp,if you heating the nute solution.
Here is a good little ec,cf,tds calc

http://www.lenntech.com/unit-convers...tds_engels.htm

[Let there be cheese]

What about the ph for growing in canna coco?

[pollenmanandy]

keep it between 5.5 and 6.5 and u will be sweet. i grow in coco now and again for something dif and it gives u a little room for mistakes. u only need 2 meters ph and either tds or ec ! good luck

[chris1985]

Thanks guys this info ios good for someone like me who is new and thinking about going to hydro

[4DAM2008]

thanks very very helpful, just changed to NFT @ Xmas, Want bigger yields...?! me hopes..? just brought a PH tester for £17.00 on Ebay.

[weedboy]

Ok im buying kit now - can anyone reccomend something for EC measurement (i presume bluelab?), something quick and good for PH, and for temp i guess any food probe?

[Wrams]

I purchased this meter and as far as I am concerned it's perfect.

Does anyone else have this meter...? If so what are there thought's ?


I bought it off of eBay and its the most acurate meter I have ever used

[maxpower]

that looks the bollox rams, i bet its a lot easier than doin it with pens one by one. Might have to get me one of them, how much did it set you back?

[Wrams]

that looks the bollox rams, i bet its a lot easier than doin it with pens one by one. Might have to get me one of them, how much did it set you back?

£69.99 mate, I'll find you the link to the eBay store ok, the guy sends it very quickly too

eBay Link

Click the link it will take you to the cheapest ones on eBay ok mate.

Hope this helps

[ChronMan]

so if my ec pen reads 256 thats a reading of 0.4 right.? just to check i can read the scale youve given


thanks Chron

[paulwrx]

thanks for help

[pugsta]

thanks for info really came in helpful love it took me a year to find that out sad i know but thanks, i use a bluelab truncheon i brought on shere fact it cost the most, as i see you know abit about these nutrient testers could you tell me if this bluelab one is any good thanks ?

[DrGreen]

bookmakring post for a later read, wil take me days are the combo meters beter than ec and ph singles

[HighFlyerFlyingHigh]

Great read, thanks for the info IKDJ2003, cleared up more than a few questions I had on this subject.

Can anybody recommend an all in one truncheon or meter that has performed well for them that is a reasonable price (£30-£40)? just splashed out on a IWS 6 pot system and want to get it up and running quick! dont really wanna sting my wallet again this month but I know its essential

[seanMcPot]

This thread should be made a "sticky"

[Indica Daze]

Hi guys. My EC stays at a constant 1.6(falls slightly sometimes before top up) and PH rises slowly each day. Is this what it should be doing? Also is adding PH down each day bad?