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J.R. Peters, Inc.

4.7/5
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DFWmdNewbie
Using these dry nutrients makes storing easier. I like that they're designed to be used with tap water. Combining with Epsom salt was easy. Dissolving was annoying and getting the EC right a bit of a process. Results seemed good, though. The company seems responsive and to care about the customer.
3 months ago
Kelly420Newbie
It is the simplest and most cost effective way to run hydro. Easy peezy. I been on jacks for years now.
4 months ago
resimaxNewbie
I didn't actually use this for this grow as I decided I wanted to do a completely nutrient-free and maintenance free outdoor grow. I usually use this line for all my outdoor sparingly and it has never let me down.
4 months ago
Professional <font style="vertical-align: inherit;"><font style="vertical-align: inherit;">😉</font></font>
5 months ago
greenAFNewbie
First run using, absolutely love it, new standard!
5 months ago
When growing with salts I use bloom in transition and early flower. In soil I use part a only for late flower only.
5 months ago
resimaxNewbie
I didn't actually use this for this grow as I decided I wanted to do a completely nutrient-free and maintenance free outdoor grow. I usually use this line for all my outdoor sparingly and it has never let me down.
6 months ago
greenAFNewbie
First run using, absolutely love it, new standard!
6 months ago
TsukinoKiNewbie
I love the consistency using these nutrients and haven't ran into any issues the whole grow
6 months ago
TsukinoKiNewbie
Very easy to use and never caused an issue during the grow.
7 months ago
DmarsNewbie
The grow did go great using only this in the same amounts for the entire grow. I'm trialing the GH Flora trio instead of this to see if there's much of a difference
7 months ago
Good idea to use these in the seedling stage to give the seedling a big push. I would not use it before 2 weeks after germination--its a little strong. I also would not recommend anytime after prebloom. I only use it as a one shot deal after the first true leaves have formed and only to boost vegetative growth.
7 months ago
resimaxNewbie
I have been using this for YEARS. I use it very sparingly for my outdoor garden only, and it has always worked great. Bonus, you can't get much cheaper.
8 months ago
justrightNewbie
Jack's is almost to easy to use. It is hard to beat having some thing that you use the same strength from seedling to finish with.
9 months ago
MeksterNewbie
Great and easy to use. I seem to be getting purple flowers with my last two grows.
9 months ago
CannaAnnaNewbie
I use the same fertilizer from seedling to 3-4 weeks before harvest, just different concentrations.
a year ago
CandogNewbie
Excellent all I use for everything i grow
a year ago
Really liked the ease of use and look forwards to continuing it's use
a year ago