ppm madness

[afgahn bob]

Guys &gals, Have a stupid newbie question from stupid newbie grower,

 

If after mixing normal nutrient regime + additives,only reading 270-290 ppms

 

When measuring runoff,does'nt go over 540 ppms.

 

Does this mean 1; nutes are'nt strong enough.

 

                           2; level of nutes in pots,salts hav'nt built up.

 

                         3; TDS meter belongs with rice cooker graveyard

 

or                    4; WTF or FIK.

 

Much love my peeps

[Serrated edge]

Never checked the EC or in your case ,parts per million of runoff ,,,,don't know why I'd want to ,but if your

 

getting a decent runoff your not likely toget any buildup of salts .

 

 

Maybe your confused from reading about people checking the Ph of the runoff

[afgahn bob]

Maybe just confused, been reading bout ppl following feeding schedules and going higher in ppms as plant gets bigger;

 

The amounts they talk about are up to and over 1000 ppms

 

I cant even get close to that even when water is loaded up.

 

So that was reason for question. Are my nutes not good enough?

[Gazza2001au]

Bob some people run huge PPM strength i don't know how they do it.. from my vague memory mine use to be around 700-850 but i never check i only just bought another PPM member in a kit

 

maybe there strains have high tolerances built up over years? i donno..

[Indycar]

I found ppm scale way to broad to get a good grasp on it. I found EC is a lot simpler scale to work with (imo).

 

Unfortunately it could be a number of things because there's a lot of other info missing from what you've offered up, bob. Like grow medium, ph levels, Nute/Additive info, age of plants and so on.

[afgahn bob]

Sorry indy, They are all autos (i know,i know get a real yield). All about 68 days from seed.

 

Coco-perlite-blood & bone and some organic stuff

 

PH levels have finally settled in acc range. 5.7-6.8

 

Nutes are grow research 3 parts

 

additives ;Monsta bud and tonic

                Rhizotonic

                 Worm concentrate,fish emulsion and kelp tonic

               Unsulphered mollasis

                 Calmag

 

Lotsa sticky buds,just a bit stunted thanks to prior bug prob

[Serrated edge]

Photos ?

[Indycar]

Hmm, got a bit going on there in the grow medium alone. Gotta stick my hand up and admit this one might be a bit beyond me, Bob.

 

Also, nothing wrong with Auto's. They're a great way to fill some jars in a hurry when one's stock gets low. Which I'm in the process of doing now.

 

hmm

 

[Sir PsychoHashy]

If your runoff is higher than whats going in it means there's a build up of salts in your medium (coco I assume?),at double what's going in I'll assume you haven't flushed your coco regularly during the grow.

 

No idea on the numbers as I also use EC, but they sound too low to me????  I'm one of the one's that pushes EC on my auto's, but it's done on the basis of knowing what signs to look for to judge when to back off.  I use Tropf Blumat drippers in coco, so I run a lower EC than run to waste as a result, but with run to waste I'd be looking at peak EC around 1.8-1.9 during stretch, and backed off to 1.5-1.6 max by the point you're at, with weekly flushing, but those numbers can vary a lot from one strain to the next.

 

[afgahn bob]

Seedsman reckons 80-88 days seed to harvest,i'm at about 72

 

Do you think i should just be flushing for last cpl wks.?

 

And if so is there a better way of doing it

 

Also any idea what this black outline on leaves?

 

only seems to be one plant, Thinking some kinda heat issue