Best way to use Jack's Classic Fertilizer

bluntmassa1

bluntmassa1

Well-Known Member
Dz75 said:
DAng I just went to order some of this.. Over 110 dollars for shipping :OO

Is there any outletts in the UK that sell this ? Or is there anyother product that is sold here that is juts as good ?

Many thanks in advance :)
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Should be some you could always try eBay cheapest place I have found is Greenhousemegastore.com not sure how they are on international orders. But their must be a large shop somewhere in the UK that sells it shits about as popular in the states as Miracle Grow. Lol
 
guido420

guido420

Well-Known Member
if jacks proper is not available.....look for Peters professional. Minor differences and avail at most ag or commercial stores. JR Peters makes same ratios for ICL Everris....but missing minor trace elements comparatively.
 
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Pm0xqu12

Member
I'm doing a outdoor grow in the ground with promix hp mix with some dirt and watering about 6 gallon per tree. My plants are two weeks into flowering can anyone tell me if I can use jacks 10-30-20 at a tsp a gallon and Cali magic 2 ml a gallon to feed every 2 days? no plain water days just feed feed feed feed every two day when the hole is dry
 
dandyrandy

dandyrandy

Well-Known Member
Maybe. Depending on the plant size etc. I prefer to fertilize and watch the plant. I used Jack's indoors and it worked fine. I ran an ec of ~1.5 ish plus magnesium etc. after the plant got some size. So just watch for burns or leaves being too dark. Some strains can be hard to tell.
 
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Pm0xqu12

Member
Right now I don't see any problems after two weeks into flowering.. This is my first time growing and using jacks and I don't want a nute lockout so I wanted to ask and make sure
 
Pete Jones III

Pete Jones III

Member
churchhaze said:
Jack's classic and dyna-grow are designed different different things.

dyna-grow gets it's N through nitrates (calcium nitrate and potassium nitrate), while jack's classic gets it from urea.

This makes jack's classic more suitable for lime amended soil and peat based potting mixes, while dyna-grow is more suitable for mediums without lime or other insoluble forms of calcium.

It is not recommended at all to use jack's classic in a DWC. Jack's has a hydroponic line that gets all its N from nitrates. It's not there just to trick you into buying more products, they are actually designed very differently.
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This sounds very important. Does the urea nitrogen help lower the ph of most tap waters which is typically 7-9 ph?
 
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