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[Renfro]

Hi, just a quick question on rez change. I have the CAP ebb and grow system. All of the 2 gal modules are connected through tubing to the controler module and rez. During a rez change, the old solution will remain in the lines and the bottom 1 inch or so of all the individual buckets. Going through and dumping the residual solution in the lines and the buckets seems like it would be a huge and messy job. If I dump the entire rez would the small amount of old solution left behind be a problem? Thanks

[Grow Thread]

Hi, just a quick question on rez change. I ha...................

 

i wouldnt think it would be a problem at all, but just to be safe, i would probably invest $10 in a bottle of "cleaner" and use it when i flush. i seldom "get lazy" and dont get every last drop out

[TajMahal]

Good Day All

 

When reading a feeding schedule that uses EC for nutrient strength, how would one convert the EC number to PPM?

 

Kinda remember there is two different conversion factors, Hanna and some other one.

Which conversion is the one used most often?

[Grow Thread]

DECRYPTING EC/TDS METERS

 

there are 4 different types of meters that measure nutrient concentration, two are EC meters and two are TDS meters

 

of the 2 types of EC meters, (electrical conductivity), one displays with decimal places, the other without

 

for example

EC 2.0 and EC 2000 are the same

 

TDS meters come in 2 types, .5 and .7 conversion.

 

You seem to have a .5 conversion TDS meter

 

TDS meters take the electrical conductivity value that is measured internally by the meter (EC), but then multiplies the EC by a factor, either .5 or .7

 

so for example,

2000EC * .7= 1400ppm but also

2000EC * .5= 1000ppm

 

TDS is a strange beast and does not react logically, as you have found

 

for example 0-8-16 should read 1000ppm on .5 conversion meter, in RO water, but strangely, if you start with 250ppm water, and add the nutes, it wont necessarily come out to 1250, as you have noticed.

 

the reason I think this happens is that some of the TDS in the water gets neutralized by the nutes.

 

for example, much of the TDS in water is calcium, which is of very high pH. When nutes, of low pH are mixed in, some of the low and high values cancel each other out... this is sometimes called nute lockout and is the cause of some of the sediment in a res.

 

as far as the term TDS (total dissolved solids), in contrast to the term PPM (parts per million), they are the same thing stated in different words

 

here is an example of how the terms interact

 

An EC of 2000 corresponds to a TDS reading of 1400 PPM on a .7 conversion meter.

 

imho, .7 conversion is the primary hydroponic conversion factor, but many people own meters with .5 conversion, therefore, you MUST know your conversion, to understand my TDS numbers, which are all .7 values unless stated otherwise

 

in practical terms though, what you are doing is correct, and works fine, as you know

 

the gardner should mix nutes at the known recipe rate, then take a meter reading. WHATEVER that number is, regardless if its 1000, 1400, or any other number, THAT is the TDS of YOUR nutes in Your water, on Your meter.

 

As long as you dont change water or meters, keep using the baseline number you get as the target to go back to with nute additions

 

Im loving these questions! this is turning into a very complete archive of my beliefs

 

none of these ideas are original, Ive just spent a lot of time reading and learning from others

[Grow Thread]

i just happened to be reading an "ask lucas" thread and came upon that a little while ago

[TajMahal]

Thank you very much BG! +rep

 

Now i can start using the meters when i try "waterFarmin"

 

Saved n printed

[Grow Thread]

glad i could help man

 

i dont think that info has been posted on the MMMA site anywhere yet, so thanks for asking that question!!

[SublimeWind]

Dam dood, if I had 1/10 your knowledge..

 

 

And AFA the "up-roar" sorry bout that.. I just can't stand when people are TRYING to help others and get BERATED for it..

 

We all know this help is OPINION and can be taken or left.. at least I do and don't take ANYBODIES word as gospel.. If a group of people agree on an issue, then it's golden..

 

I'm the noobish guy here, so I know I should stir the pot, but dam.. the HOURS and HOURS of time spent in this thread by BG, has GOT to account for something..

 

I for one thank you BG, even if you aren't 110% ALL the time..!!!

[SublimeWind]

I also thank ANYONE that's provided a little light at the end of my tunnel..

[Buck Naykid]

this should help man

 

if it doesnt, p.m. me and i am driving to your house!!! hahahaha

ok I think I understand now... yes i would have been burning them adding the full nuts the second week..

 

but I would love the company so I will act dumb and pretend I didnt finally understand

 

hehe if you ever visit the Flint club let me know!

[Grow Thread]

this help is OPINION and can be taken or left.. at least I do and don't take ANYBODIES word as gospel.. If a group of people agree on an issue, then it's golden..

 

 

ain't that the truth!! +rep for the kind words and for hopping in earlier and lending a hand while i was busy.

 

i update the table of contents on page one of this thread a couple times a week. it's gotten to the point to where i look at it and smile knowing there's a TON of info in here.

 

yeah, i have put some hours into it for sure, but the basics are finally all here and i can just take the easy route and link to stuff on occasion. thats nice........... but whatever it takes ya' know?

 

thanks to you all!!

[Grow Thread]

ok I think I understand now... yes i would have been burning them adding the full nuts the second week..

 

but I would love the company so I will act dumb and pretend I didnt finally understand

 

hehe if you ever visit the Flint club let me know!

 

I AM SO RELIEVED THAT YOU GOT IT!!

 

hahahah.... seriously, i been waiting for you to log back in

 

whew......... i feel better now. hahaah.....

[Grow Thread]

p.s.

 

i see Taj has a post all the way back on page one. thats senority dude. way to hang!! i can only imagine how much you have learned from following this thread in "real-time" from day #1.

[TajMahal]

p.s.

 

i see Taj has a post all the way back on page one. thats senority dude. way to hang!! i can only imagine how much you have learned from following this thread in "real-time" from day #1.

 

Hey!! I like this thread

 

Thanks for being here.

[Grow Thread]

it's been a lotta' fun so far.

 

and if there WAS a benefit, i cannot tell you how many private messages i have gotten saying something like "dude, i owe you one. if we ever meet, PLEASE introduce yourself and i swear we'll smoke some of the finest i got"

 

nice to know if i am ever down and out, i could probably drive around and medicate in every county in the state

[SublimeWind]

Well, i gotta say, the helps been great, that frikkin PH graph...

 

Alas, I fear it's to late, everythings goin down quick... (

 

It's all very depressing...

[Grow Thread]

Well, i gotta say, the helps been great, that frikkin PH graph...

 

Alas, I fear it's to late, everythings goin down quick... (

 

It's all very depressing...

 

 

 

whats up?

[Grow Thread]

[SublimeWind]

the sickness has progressed into the tops and everything is curling under and twisting, some worse than others..

 

i'm not very hopeful at this point...

 

problems showing:

deffiency (P/K mainly)

PH fluctuation

Nutrient burn

 

you name it... i suck

[SublimeWind]

BTW most of my time here is speant on my PHONE, i dont have cable or net at home, so its rather difficult to post pics, quote...ect... less I go somewhere

[SublimeWind]

Im gonna try, topost some pics again, its too bad this place only allows X amount of attachment space.... its not the greatest idea to have pics on a photobucket...

[Grow Thread]

Im gonna try, topost some pics again, its too bad this place only allows X amount of attachment space.... its not the greatest idea to have pics on a photobucket...

 

unlimited space in the gallery bro

 

http://www.michiganmedicalmarijuana.org/tutorials/t-31-uploading-pictures-for-posting-on-mmma20/

[SublimeWind]

 

 

Not happy..

[THC-Farmer]

Yikes!

 

That looks like a pretty heavy phosphorus deficiency coupled with pH imbalance causing nutrient lock-up if you were to ask me. Appears to be in the early stages of the deficiency however, believe it or not. It will only get worse...

 

Sorry to see the bad luck brotha. I hope everything works out! Best of luck to you.

 

This site may be of use to you - http://www.ganjaguer...a.net/index.htm

[SublimeWind]

yeah that pretty much sums it up...

 

im working on re-populating, but it sets me back 3 weeks or better...