PH, TDS readings + questions

[GrassNewb]

Thanks again for the great advice. I thought I had read everything on these forums for weeks before Germination. I guess like anything the experience is a little bit different.

I changed out the rez with new distilled water (I could'nt make 15 gal of R.O fast enough)

The distilled water was 0 EC / 0PPM and I suspect about 5.8-6.0 (a yellow/greenish piss color)

I added 50ml Grow A 50ml Grow B and Hope they adjust and come back. (is this to strong to begin with? what should my nutes be for these girls? at such an early root development with the added shock now...)

The roots dont look anything like they did in those pics.

What happens to roots that go through major PH PEAK then major PH DROP?

 

[Macster2]

I doubt your bad conditions lasted long enough to harm the plants in any significant way.
As far as to whether 100ml of dnf grow is to strong, do you have a blue stick (truncheon stick) if you don't I recommend one however contrary to what freezerboy says I found that dnf instructions were spot on and had a number of successful crops on their instructions

 

[GrassNewb]

I dont have one of those sticks but my EC meter does seem to be accurate. Even know it uses a 0.67x multi factor. The EC value is in mS so I use that mostly.

Some one mentioned on the other forum that if I dont add Cal-Mag to my RO and Nutes I will kill my plants?

The distilled water I tested before changing out my rez last night tested at 0.000mS (0ppm) so I assume there isnt anything in there def not any Cal or Mag.

Shouldnt the DNF nutes be giving them everything they need?> whats this guy talking about?

 

[Macster2]

Ignore that idiot

 

[FreezerBoy]

Distilled water is dead water. It's wet but, that's all. Nute makers depend on you to add Calcium, Magnesium and other trace elements with the use of tap water. Some like GH even make special hard water formulas to keep you away from distilled. You have everything you need, you've chosen not to use it all.

 

[GrassNewb]

OK so after I got the Rez changed out the PH is nice about 5.9 after nutes. Holding about 0.514mS

But I am still questioning why the damn problems started remeber everything was cool up untill I seen the spots.

Is my rez Cal-Mag deffiencent or not? DO they need more nutes? I am starting to think this was a big mistake. It seemed so easy ... fill up rez with R.O add nutes. Monitor PH and EC.

What am I missing?

 

[pezoholic]

ph for clones and early plants needs to be closer to 6-6.2

RO water PH varies as yo where your water source is

fuck hydrogaurd with its one year shelf life

 

[trademanny]

fuck hydrogaurd with its one year shelf life

You understand why it has a shelf-life right? Hydroguard contains living bacteria. They sell it by the quart, a year is plenty of time to use it up.

 

[dyren]

Hey GrassNoob, nice thread so far ur plants look great. I don't mean to hijack the thread or anything but I just wanted to interject a quick question on a related topic. Currently my veg area is just my closet and isn't light sealed at the moment (I'm running some CFL's 24/7). I was just curious if anyone knows if minor light leaks during a dark cycle in veg will be terribly detrimental to my plants. Say I were to run 18/6 or 20/4..

I like the 16/8 idea, bro.

Thanks!

 

[GrassNewb]

Distilled water is dead water. It's wet but, that's all. Nute makers depend on you to add Calcium, Magnesium and other trace elements with the use of tap water. Some like GH even make special hard water formulas to keep you away from distilled. You have everything you need, you've chosen not to use it all.

^^^ I just noticed DNF does say that their EC values for different stages are based on TAP WATER THAT HAS AN EC OF 300 !!!! UGH. I never seen that. So for seedlings/clones they say EC320-450 thats like 20-150 EC with only RO WATER!! right?

I dont have access to city water as my damn water softener is plumbed in right at the main line and none of my taps are before it. SO if I used tap water it be softened which I don't think is good. Maybe I should be throwing 5 gal of bottle spring water in and then adding my R.O ?


Slight update, After changing out the rez and adding nutes back as I stated above.

I have now added H202 into the rez. Got Rez Temps at 69F. Roots have returned to normal, all smells have vanished. PH at 5.95. Nutes at 880 EC. <- does this really mean + 300 EC for the tap water I didnt have? So really EC 1180?

Some of the first leaves that were damaged just curled up and crusted yellow however all the rest of the leaves or new growth are green. I made a decision to cut the old dead looking leaves off near the stem with a very sharp exacto. Is this ok to do? or will it slow growth?

 

[GrassNewb]

Update for anyone that might be following this thread.

EC at 900 + 300 (base) EC 1200

ph 6.10

Seems things have finally gone from droopy and root withdrawal to this.

Thoughts?

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roots

 

[Macster2]

sorry not to have responded earlier, this is not rocket science.DNF has all you need in it.I thought that was clear when I said I've used nothing else and had a number of successful crops. And as your pictures illustrate,it's all good.
DNF states its based on tap water at 300 EC but that's only relevent if you don't have an EC meter and are just adding nutes with a measuring cup (as in 5ml/liter).
Chill a little,these plants are tough and if you don't screw up too much all you're affecting is your yield.

Also,change to bloom when you put the plants into flower and you can add a bloom fortifier after you so flowers.
Good luck

 

[GrassNewb]

DNF states its based on tap water at 300 EC but that's only relevent if you don't have an EC meter and are just adding nutes with a measuring cup (as in 5ml/liter).

^gotcha however
For an example.. lets say I am aiming for an EC of around 2000 for week 2 DNF suggestions... I should get my RO + Nutes to EC 1700 (2000-300) if I just went to 2000 that be more like 2300 overdoing it.

I am just saying when I was trying to hit a target EC I think I was over doing it since my RO started with 0 instead of 300.

I know you dont always have to go by their suggestions anyway. But thats were I may have went wrong originally.


One question for you now that I have kinda relaxed lol.

How do they look considering germination started OCT1... those last pics were Day 26 from the very first drop of water too touch the seed.

Aside from bing a little crispy... from my issues... are they on target ... maybe a week behind for vegetative growth.. I was kinda hoping to veg for 4-6 weeks and switch over to 12/12 They might be to small...now..

 

[Macster2]

your using ro water right? (nothing in it ) now add nutes till you hit 2000 ec

They look healthy enough. It takes a little while longer from seed. Are these going to be mothers?

By the way an ec of 2000 is way to strong for these plants, should be about 1/2 that till they get about a foot tall

 

[GrassNewb]

your using ro water right? (nothing in it ) now add nutes till you hit 2000 ec

They look healthy enough. It takes a little while longer from seed. Are these going to be mothers?

By the way an ec of 2000 is way to strong for these plants, should be about 1/2 that till they get about a foot tall

I use RO yes. 0 EC.

I don't know how many will be females yet. I am hoping for 4 plants to be female. If less than 4 females I may think about keeping these as mothers and cloning them off (which I have zero exp as well)

Yeah EC 2000 was just an example of a suggested EC stage from DNF. I am currently around 900 EC.


I do understand that 0 EC RO water + dnf nutes = MY EC VALUE

I was just saying that perhaps adding 300EC to MY EC VALUE would give me an indicator of the "DNF suggested EC Value" for their stages.

I know I know forget DNF... and their suggestions...Just trying to get a handle on that.

 

[Macster2]

there suggestions are great if you don't have a ec meter, as I said it worked great for me before I had a truncheon blue stick.
However I use city water and it would be difficult to hit my target ec using ro water and a measuring cup,but that's neither here nor there for either of us right?

 

[GrassNewb]

Updated Pics

Updated Pics

Quick update on things. added more h202 and DNF nutes to the REZ slowly over last week. These shots were directly after a neem oil misting. EC at 1200, ph 6.0 Things looking on the up and up. Hoping for First week of November switch over to 12/12.

Plants do seem to still be showing signs of def. Spots here and there...

Roots exploding and doing MUCH better in the nice cool 68.7F h20! and lots of DO kicking around. Hope to keep Root Rot in control.


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