Thanks, they were fun to drive and work on.
No sir, sold that one about 10yrs ago.
The blue/primer was the last to go about 5 years back.
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Talks about a Merv13 intake filter is all thats required to block dreaded spores. Merv8 pre-filter technique. Koo
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Good read on nutrients in commersh crop environment using Jacks.
Table 6 changing ratio example.
hydroponic-recipes-1bms8vj.pdf (339.5 KB)
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Playing with dilution by percentage.
Starting with a hot mix of 1.8 EC. 940ppm. (US 500 scale)
Calculates the amount of water needed for a given EC.
Hardest part was diddling around with the percentage to end up with exactly 700, 600, etc. lol
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curious to know if the base files are available to download - I started using Jacks 321 a couple month ago and I see the need to run lighter on part A during flower - i also need to play the numbers game since Iām also using hard well water [limestone] and need to adjust furtherā¦
Absolutely. Glad to share. Iāll set one up for download.
How are you with spreadsheets?
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since back in the DOS days - 6.2.2 best ever still.
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Heh. I learned spreadsheets using Lotus 1-2-3 on DOS, and preferred it for many years. Still run software like Turbo Pascal on DOSBox occasionally.
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Good to meet old school data processing dudes. Lol.
Giving me flashbacks to my DOS days. Lotusā¦Dbaseā¦Word imPerfect. Lol
I need to get to the PC so I can drop a file on you.
Not my file but highly recommended!
https://www.rollitup.org/t/understanding-and-calculating-nutrient-ppm.995409/page-4#post-15106516
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Sorry for the delay.
@rootfarmer
@Howard.Crane
Iām stuck using my Linux Ubuntu OS - my Windows drive took a chit. lol
2 files. One in excel format, one in Libre .ods.
Use whichever works best for you.
There could be column/row size or other issues.
Lemme know if any problems with download or files.
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Will check it when Iām back at my desktop. Iāve been using a heavily customized version of the old one that used to be on AngelFire, adding things like how to mix up stock solutions for a target ppm given the number of ml you want to add to the final solution (Iām weird, I want all parts to be added at 10ml per gallon, for instance), so Iām super curious to compare. I have been intrigued since seeing your screenshots 
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This stuff used to be fun. lol
Too many years of IT work burned me out, so I try to keep things simple.
Most of what I do it cosmetic, functional and visually. Gathering details from calculators and other sources, and jamming them my sheets.
Must resist the urge to link my visual front-end with renfroās PPM calc back-end.
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After more than three decades, I still think itās fun. Currently mucking about with writing a compiler for (yet another) custom embedded scripting language. I am, as the kids say, āback on my bullshitā lol. I guess I just like the idea that I can do it better this time than every other time, or something.
Same thing goes with organizing information. I canāt seem to ever stop thinking about making incremental improvements to increase clarity and/or convenience.
Itās an addiction, lol.
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I know the addiction. Started with punched cards, assembly and cobol on mainframes.
Butā¦writing a compiler! Holy moses!
Retired 5 years ago - and Iām still learning how to slow it down.
4GL lol
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Got my son into it too, now heās a senior developer for a well known local game studio, specializing in low level networking and multiplayer.
He just sent me this joke:
The plural of āindexā is āindicesā
The plural of āvertexā is āverticesā
The plural of āmutexā is ādeadlockā
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Iām currently writing some image processing code with OpenCV. Difference is, Iām getting paid. 
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