The Jack’s 5-12-26 has 8% S and 6% Mg
The ppm of NO3 from that is only 45ppm. Not nearly enough for veg and up to mid flower.
I do wish I had a Ca source without N so I could taper off towards the end of flower.
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I want to switch to buying salts individually for more customization. This was just easy. It’s called Jack’s 321 where you use 3 parts Jack’s 5-12-26 or chem-gro 5-11-26. I like Jack’s better as I eliminate the 1 part which is Epsom salt since Jack’s has a lot more Mg and S I find it’s not needed. The 2nd part is CaNO3.
I make stock solutions 100:1 ratio in which I feed 1oz per gallon.
This usually has 270g Jack’s in jug A and 180g CaNO3 jug B and then I add to res in equal portions to get my desired feed level
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Next batch will be going into totes this weekend.
Going to put the rdwc on hold so I can experiment.
Going to run 12 individual buckets 4 will be flushed with just water. 4 will be flushed with a flushing agent. 4 will just be tapered off per my normal schedule just like they all will be doing just to keep everything equal besides the flush. All same strain. I will be mixing up nutes in a 55gal barrel and pHing and filling up with that so everything is the same.
I’ll let them results speak for themselves
I joined this forum to grow as a grower and instead of just getting by I want my plants to thrive.
This batch I got going now I’ll try and jar when they are more moist.
I’m actually getting some smell from the buds now after 4 weeks sitting in jars. It’s also burning a little better. I still can’t take a hit and go back to the bowl 30seconds later and restoke it. But one light and some carb work keeps it going.
Oh and I put some buds in some distilled water to try this water cure. Not a lot as I’m skeptical of this, worried mold will grow.
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@Viva_Mexico already told you, calcium sulfate (aka garden gypsum). 
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I may join you on this experiment, just for the test & a little bit(like yourself).
Always been curious though… trying different weed is our mainstay right? 
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I saw. But was worried about the high amounts that I have in my Jack’s already.
Been a while since I looked at a mulders chart. Not sure if S is an antagonist to any other nutrients.
Turns out S is pretty safe and isn’t even listed on the chart. S is also good in budding.
Maybe I’ll try it out on this crop that just entered week 3 of flip.
I’ll do a half and half of CaNO3 and CaSO4 of what I’d normally use of CaNO3 then cut CaNO3 entirely out
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Not sure, but S is an important pre-cursor for terpenes.
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Just bought some potassium sulfate and calcium sulfate from JR Peter’s.
(2) 4lb containers for $20 not bad
That should last for quite a while!
Hell yeah. Figure the K2SO4 be good for late flower when I wanna reduce the P by using less of the 5-12-26
Need to run all this into hydrobuddy and see what I get for ppms.
1# was $6 and 4# was $10 made more sense to get the 4# pail
Do you know of a place where I get can some good starting numbers from for all the weeks of flower?
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Someone else will have to take that one, I’m organic so I use about 1 cup per cubic foot of gypsum.
Is it a hard jump from hydro to organic? I’d like to try organic soil.
I started in soil years ago but didn’t like all the bugs that were coming in with the soil
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i’m trying to achieve something somewhere in between…but the big difference is i’ve never run hydro…mmm. except once i took a flowering dispensary clone from soil to a dwc. had no idea about pH back then. 
i’ve been using a variety of mixes & am tired & baked so i can’t list them but, w/o a doubt, inside i like 60-80% perlite, regardless of what the rest is.
i brought my living soil inside & all the damn friends 
too, so i’m not going with that inside, and it’s too good to “nuke” it 
so i’ll work it in in here and there.
a couple years ago my idea was to use my huge vermicompost collection & perlite, but the worm-shit-compost needs a soil test & adjustment.
I have this problem with certain strains such as OG Kush and Amnesia Haze.