I duno your options for buying. But 11.3 Kg of Jack’s Hydroponic 5-12-26 is about $180 now (Used to be more like $120 ish, not long ago I think). 15 Kg of Plant-Prod 6-11-31 is about $120-130, maybe cheaper for you - because it’s made in canada, in your province no less - I think.
You’ll find it at agriculture / chemical supply places - and maybe other more retail places (go to their website, enter your province/area code and it’ll list where you can get it locally - or maybe order from). You can get the calcium nitrate (Yaraliva CalciNit, or PureCal - which has no ammonium) and magnesium sulfate (MgSO4, or “Epsom salt”) from the same place, cheaper than other places, for a big ol’ bag. You can also buy whatever else you want at these places, MKP, KSO4, etc., and not have to buy “bloom boosters” or whatever. But that’s getting a little more “custom”, and they don’t generally sell smaller amounts. Plant-Prod does have other “MJ specific” lines in smaller amounts.
There’s nothing that special about athena, jacks, masterblend, etc. Just a different blend of basically the same salts, maybe in different proportions, or in a way that ensures you have to buy their other bags to make it all work. The approach they take in blending might different (and innovative, even), but the ingredients aren’t. And none of them “make” calcium nitrate, for example. “Jacks” doesn’t make calcium nitrate, they buy it and brand it as “Jack’s Part B” or whatever.
Join us in not paying for water and marketing. Haha. (Been using Jack’s for a few years now.)
sounds tasty 
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