E.C 500 or 700?

KAOSOWNER

Well-Known Member
E.C to ppm x500 or x700. Which do you use and why? Also your reccomendations for different stages would be great as well. Thanks in advance to anyone who contributes to this thread.
 

BSIv2.0

Well-Known Member
What nutes? I use GH 3part @ 2:1 Micro:Bloom for veg, 1:2 for flower. Depending on strain Ive gone as high as 1200ppm as low as 800ppm. I'd have to look at a conversion chart to see what the E.C. would be.
 

FilthyFletch

Mr I Can Do That For Half
burp~~~ depends on what country your in whether you use 500 or 700 as it corresponds to countries nute measurements. In the us its one and in china another..Ill double check tomarrow but if I remember right in the us we use 500 which is EC 2.0 which is roughly 1200 ppms
 

KAOSOWNER

Well-Known Member
Yes that is correcct in the U.S we use 500 and The U.K 700. I am just trying to better understand why the difference. So in general the U.K would just use a lower E.C than the U.S is it really that siimple? Why so many different scales i heard of some people that use x650.
 

FilthyFletch

Mr I Can Do That For Half
Yup thats it..why do the european countries use metrics and in the US we use Standard?? Why Farenhiet over celcius??? Just to give us a hard time
 

FilthyFletch

Mr I Can Do That For Half
Some nutes run a lot lower ppm but for different reasons.Like fox farm I bump up to 1550 ppm at its highest while some advance nutes will never hit 1000 at the high point.Differnt mixes and particle sizes
 

KAOSOWNER

Well-Known Member
I am using Fox Farms Grow Big, Tiger Bloom, and Big Bloom. I am also using techna floras sugardaddy and epsom salts for hydro, and the same thing for soil but instead of sugardaddy i use Grandma's Molasses. I also occasionally will throw some zinc plated screws in my soil or hydro.
 

FilthyFletch

Mr I Can Do That For Half
I run grow big,tiger bloom,big bloom,grotek super H202, and sweet in my aero grows..In my soil Im using only 6.8 ph water for the veg and now in the flower I added doses of indonesioa bat guano high phos,sugare daddy and molasses every other watering between sugar daddy..ohg and in my flood tables I grabed Dutch Master nutes to see if they were any good with grotek h20 and suagr daddy
 

KAOSOWNER

Well-Known Member
I was thinking of trying something new as well i was thinking of advanced what would you reccomend? I was trying to go completely organic on this one but have come to find that almost impossible in hydro because of the ph up and down i cant get myself to use the unstable organic buffers.
 

FilthyFletch

Mr I Can Do That For Half
I want to do a pure advance nutes grow and Im liking the looks of the Canna line but not sure yet.. I love my fox farm as it traets me good and is reasonable..The dutchmaster seems to be working good but Im not adding the potash mix but adding Tiger bloom instead. I hope the dutch ends well as Im doing my first BB grow in that stuff with my first flood sweet purple plants too and then one of my usualy plants tossed in for comparison from what I have seen fox farm do with that strain
 

tsnow

Active Member
Heres a little info I found a while back on converting ec/us to ppm.

PPM Conversion Factors

Not all TDS meters will give the same PPM reading. The main reason for this is that different meters will use different conversion factors. These conversion factors are based off the EC reading. For example: A meter that uses a conversion factor of 0.5 will display a reading of 0.5 times that of the EC reading. If the EC reading is 1000 µS then the ppm reading will be 500 ppm. It is as simple as multiplying 1000 by the conversion factor of 0.5. If the meter uses a conversion factor of 0.7 (the most common conversion factor used) then 1000 µS would be 700 ppm (1000 x 0.7). When purchasing a TDS meter it is very important to find out what the correct conversion factor is for the meter. It could make a difference of more than 200 ppm! Not only is it important to know what the conversion factor for the meter is, it is also important to know the conversion factor of the calibration solution. Generally speaking, Genesis calibration solutions are for meters that use a 0.7 conversion factor and the Hanna solutions are for meters with a 0.5 conversion factor.

Well I was going to post a link to the info but it looks like the site no longer exists:neutral: Anyway it's pretty easy, µS and ec are the same thing (some manufactures will list it one way or the other) you just add the decimal, all meters actually read the ec but then will display it @ different conversions (.5 or .7) or just the ec.. It just depends on what conversion your device converts @ if it's shown in ppm.

2.0ec @ a .5 conversion would be 1000 ppm
2.0ec @ a .7 conversion would be 1400 ppm (or so)


@ least this is my understanding but I could be wrong :joint:
 

KAOSOWNER

Well-Known Member
i lnow all of that already my meter converts to both automatically I was more or less asking why so many variations, and i believe fletch gave me the best answer i am sure to get.
 
Top