According to jr Peters the max solubility on the pro hydro is 4 lbs a gallon. So at 880 you are only around half the limit.
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A question for the growers using Jacks 5-12-26
- Thread starter Jabapc
- Start date
Miraculous Meds
Well-known member
My bulk res's have been lasting me every 2 days, so ive just been mixing fresh. They are 100 gallon res's. It mixes perfectly clear when I do it this way.
Why that low?are you running 10 or 20 ml a gal??
When I was using 880/gallon I kept getting gunk and lots of solids floating around in the jug. I spoke with a rep from jr peters who stated not to use over a pound per gallon. I use around 32 mls/gallon of jacks for an ec of 1.2. Another 18 mls of calnit for ec of .77. Epsom .22 for a total around 2.1 ec.
Got you,i do get gunk after 2 weeks of mixing 880 grams of jacks in 1 gal,it looks like straight up Chinese egg drop soup.
Rabbi
Member
What exactly is that gunk? Is it bad for the plants? I've experienced the same issue as well.
MrBungle
Well-known member
Or it wasn't mixed well enough to dissolve completely into solution... I always leave air space in my concentrate jugs when mixing, to create more agitation. Then I top it off to the amount of liquid I need, and shake it some more
The gunk is probably a mixture of undissolved dry nutrients, and precipitates formed from chemical bonds
The gunk is probably a mixture of undissolved dry nutrients, and precipitates formed from chemical bonds
I don’t know tbh,literally after 2 weeks gunk starts building up .It could be that the shit is not completely dissolved.I started using aquarium heater to warm up the water before mixing,it seems to help a bit.But i still ended up with gunk in like a month later,but this was in a 2 gallon mix which takes longer to use than 1.I am going to try mixing one gal instead this time.
On another note isn’t there some other way to mix powdered nutes like sometype of an industrial mixer or something?.Because how do greenhouse and agricultural growers mix their powered nutes??
I don't think Jack's has a preservative in it, so you're probably seeing some kind of mold or growth. Keep it cool and you won't have that problem.
Pros use electronic stirrers to mix powders into solution. I put hot water in a stock pot, put it on my stirrer, drop the powdered nutes in, and come back a half hour later to perfectly mixed nutes.
Rabbi
Member
Mine definitely looked like mold. I'll try making a weaker stock since I don't have an overly cool place to store it in.
You ll notice a night/day difference. Just be sure to use ro or distilled water.
Rabbi
Member
Yep for sure. I made a jug(2.5 gal) today already. Thx for the tip.
I grow everything in tap water with 3.7g of Jack's 5-12-26 and 2.5g of CalNit per gallon. Freshly rooted clones all the way through flush. No need for Epsom, most tap has plenty of sulfur and magnesium.
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p0opstlnksal0t
Active member
Any of you guys make the switch from Jacks to Greenleaf Mega Crop?
I tried it and feel the same way about it as I do about Veg and Bloom....I wanted to like it but still like jacks better for its versatility ,price and healthier looking plants.
That said I do like adding a couple hundred ppms of it to my veg and flower feed (for the first 4 weeks). Its gets the aminos, humic/ fulvic and chitosan I want in the mix.
