Grow Mediums Canna Aqua nutrients chart HELP?

[BigPuffer420]

Hey AFN,

So, I keep hearing the term being used "use quarter strength with manufacturing guides" etc.. Below is a chart I have been looking at and my question is, if I went by the charts advice - 15/25 ml per would this be the figure which would have to be quartered, so if I went 5ml (2.5ml of each A and B) or, is that already quarter strengthen?

I ask this because I'm doing a DWC and in a separate bucket I tested out the poms etc prior to filling the Res and it came in at 195 ppm!! Surely that's too much nutes for a seedling/veg in day 1 week 1?

Thanks in advance guys, peace

 

[Simplicio]

Hey AFN,

So, I keep hearing the term being used "use quarter strength with manufacturing guides" etc.. Below is a chart I have been looking at and my question is, if I went by the charts advice - 15/25 ml per would this be the figure which would have to be quartered, so if I went 5ml (2.5ml of each A and B) or, is that already quarter strengthen?

I ask this because I'm doing a DWC and in a separate bucket I tested out the poms etc prior to filling the Res and it came in at 195 ppm!! Surely that's too much nutes for a seedling/veg in day 1 week 1?

Thanks in advance guys, peace

Most nute companies recommend much too high usage to sell more nutes.
I recently switched to a nute maker that's actually honest about this, and their recommendation matches my experience that going above 350 ppm (500 scale) can cause nute burn.

Here's a post I made recently:
I recently switched from a GH Ecogrower top feed Deep Water Culture system to a Current Culture Under Current Solo Pro without the top feed.
I had been getting severe nute burn gold spots on leaves in late flower, even when using EC=0.7, or ppm=350 on the 500 scale.

There is an astounding difference between nute recommendations between these two companies.
Not only does Current Culture (https://cch2o.com/cultured-solutions-feeding-schedule/) recommend a MUCH lower ppm than GH (http://gh.growgh.com/docs/Feedcharts/GH_FloraSeries-REC_03216am.pdf), but they also recommend far less phosphorous than GH.

Here are the PPMs recommended by each for 8 weeks of flower, GH average values listed first:
1100-210, 1125-250, 1150-300, 1200-325, 1200-350, 1225-300, 1150-225, 950-200
The GH ppm recommendations are about 4 times as great as the Current Culture recommendations.
The same pattern also holds for veg, where GH recommends 5 times the ppm as CC, which averages about 110.
My last grow using ecogrower had some huge plants, including an almost 6 ft mephisto sour bubbly, while never exceeding 350 ppm.

My tentative opinion is that GH and most other nute makers recommend too much nutes to sell more nutes, and that CC's 350 ppm max during flower, and max 160 during veg, is correct for their DWC.
It's likely that DWC is so powerful, that the nutes are more efficiently used than expected.
But I won't know til I try the CC recommendations for a complete grow.

 

[EvilScotsman]

hey buddy what i do is make up a batch of full strength nutes from what the manufacturer says. get that ppm then divide all it to 100. keeping the ratios the same.if the tops turn yellow up the micro nutes/ calmag. bottoms turn yellow up the base nutes. easiest way ive found. and just follow the ppm metre. when the ppm drops you up the nutes in the same ratios, if it rises you add more water. doing it that way means pretty much nothing other than the odd little bit of N tox can go wrong.