LaquerHead
Well-Known Member
From what I've heard, rx almost seems to good to be true! What has your results/experience been like?
DrDoob
Well-Known Member
It’s about as easy as hempy. I don’t even really properly measure, although I keep it within the recommendations. I grow all different strains perpetually, and even still it’s hard for me to mess up. The only issue I’ve had, besides the price, is it comes in two variations one half the strength of the other so I have to be slightly careful measuring it out. For a couple weeks I was accidentally doubling the full strength and my plants didn’t die or anything really, the leaf tips got burned though. It was still one of my best harvests.
I use tap water but even so have to use cal/mag too, I’m pretty sure Sue said she does too.
Hey fellow growers! 
I went to their website and downloaded the labels. Ran their recommended 8 ml/gal of each through the Nutrient Professor* to see what the nutrient profile looks like:
Well, nothing special there. Missing a bunch of typical micros. The K is a lot lower than I like, but the label has a warning not to use potassium silicate. That’s no good, because I like to add silica. Another thing that stands out is the cost per gallon - $0.54! Yikes!
This is the kind of nutrition you can get for less than $0.10 a gallon.
Now, maybe they are putting some magical mojo into the bottles, and leaving it off the label. And, I guess whatever keeps it green is okay. It’s just better to be informed.
*co-developers FelipeBlu & @BTzGrow
I went to their website and downloaded the labels. Ran their recommended 8 ml/gal of each through the Nutrient Professor* to see what the nutrient profile looks like:
Well, nothing special there. Missing a bunch of typical micros. The K is a lot lower than I like, but the label has a warning not to use potassium silicate. That’s no good, because I like to add silica. Another thing that stands out is the cost per gallon - $0.54! Yikes!
This is the kind of nutrition you can get for less than $0.10 a gallon.
Now, maybe they are putting some magical mojo into the bottles, and leaving it off the label. And, I guess whatever keeps it green is okay. It’s just better to be informed.
*co-developers FelipeBlu & @BTzGrow
DrDoob
Well-Known Member
I think the Grow A&B are just the base nutes and the Energy contains the micro nutes and the yucca juice or whatever it is they say it’s got.Hey fellow growers!
I went to their website and downloaded the labels. Ran their recommended 8 ml/gal of each through the Nutrient Professor* to see what the nutrient profile looks like:
Well, nothing special there. Missing a bunch of typical micros. The K is a lot lower than I like, but the label has a warning not to use potassium silicate. That’s no good, because I like to add silica. Another thing that stands out is the cost per gallon - $0.54! Yikes!
This is the kind of nutrition you can get for less than $0.10 a gallon.
Now, maybe they are putting some magical mojo into the bottles, and leaving it off the label. And, I guess whatever keeps it green is okay. It’s just better to be informed.
*co-developers FelipeBlu & @BTzGrow
Ah great info Doob! 
What’s your complete regimen?
What’s your complete regimen?
DrDoob
Well-Known Member
In veg I use 2.5ml of GH Armor Si, 5ml of Cal/Mag, 5 ml of Rx Green Energy and 15ml (or 30ml of the half strength) Grow A&B.Ah great info Doob!
What’s your complete regimen?
For the first three weeks of flowering I switch the Grow A&B for the Bloom A&B.
Then for two weeks I stop the silica and go with 5ml of Cal/Mag, 10 ml Rx Green Bulk and 15ml (or 30ml of the half strength) Bloom A&B.
Then cut the Bulk to 5ml until it’s time to flush.
All of those are the plan on paper, I sometimes back off the nutes depending on how they’re looking. Every 5th watering or so I flush with plain water.
For rooted clones and seedlings I use whatever is left over in the watering can from the veg plants and water it down about 50%.
Thanks for the data!
DrDoob
Well-Known Member
Here is their feeding schedule from their app.
Hey Doob
From what you wrote you are using:
Please allow me to apologize for the shitty photo-scan. It would be nice if I knew how to upload a PDF.
From what you wrote you are using:
Please allow me to apologize for the shitty photo-scan. It would be nice if I knew how to upload a PDF.
DrDoob
Well-Known Member
Hey Doob
From what you wrote you are using:
Please allow me to apologize for the shitty photo-scan. It would be nice if I knew how to upload a PDF.
Awesome thanks, $1.38/gallon sure seems expensive but I’m not switching anytime soon.
BTzGrow
Well-Known Member
@FelipeBlu introduced the Nutrient Calculator a few weeks back and at first I was kind of like, well whatever I'm just using what the recommended dose of the product suggest. However, he kept doing some additional calculations by asking me what I was actually using and the results started to dawn on me. I played with the calculator and and also discovered I was actually feeding just about enough of the nutrients he recommended.
I did a mod on the spreadsheet calculator he gave me, and started so see the value of actually crunching numbers. I guess I'm saying it became kind of like reading the contents and percentages on the labels of food and also comparing the cost per serving which has long been my thing with comparative shopping.
It really got interesting when the two of us started crunching numbers of other products and finding some results that though appeared similar, had wide ranges of cost per gallon of mix. I crunched the numbers on Clonex Clone Solution with the DynaGro Protekt and found a better resulting mix and a cheaper price per gallon than my current use of DynaGro. Then he suggested checking Jacks and I found the Greenway products along with the Jacks on Amazon. Everything seemed to basically come down to the same place, some had more, some had less, but all were fairly close.
Like many other things in life I try and stay away from having smoke blown up my skirt. Give me proof as to why something works better. Quantitative Proof. Show me the numbers and I'm in. Tell me it has magical properties you can't share but that they really work really awesome, you have lost me forever.
Paying more didn't make sense other than the marketing to charge people more money for bottles with cute looking stoner friendly/weed looking labels. Given that the basic cost of using the Greenway powder product with the semi expensive DynaGro Protekt for a total cost of around $.09 per gallon made really good sense to me. Using the Greenway also seemed to be rather simple and straight forward. K.I.S.S.
In the end I guess it all boils down to Yield vs Cost of production. We do that with lights and size of grow areas. Why wouldn't we do the same with nutrients. If I can grow Cannabis for a lower cost of nutrients and lights comparatively to a higher cost, at what point do we see diminishing return on the increased investment. I bought a second light that matches my first and I will amortize that cost over several grows. Nutrients are a single use item, it's basically a pour to waste, gone process. If you pay more to get a slightly larger yield what do you really get other than bragging rights. For me I like spending less to get a similar yield at a much higher price. Does the increase in price also radically change and improve the taste or high? Those are questions for those with much more experience than myself. For me my palette just isn't that refined to know I guess.
I did a mod on the spreadsheet calculator he gave me, and started so see the value of actually crunching numbers. I guess I'm saying it became kind of like reading the contents and percentages on the labels of food and also comparing the cost per serving which has long been my thing with comparative shopping.
It really got interesting when the two of us started crunching numbers of other products and finding some results that though appeared similar, had wide ranges of cost per gallon of mix. I crunched the numbers on Clonex Clone Solution with the DynaGro Protekt and found a better resulting mix and a cheaper price per gallon than my current use of DynaGro. Then he suggested checking Jacks and I found the Greenway products along with the Jacks on Amazon. Everything seemed to basically come down to the same place, some had more, some had less, but all were fairly close.
Like many other things in life I try and stay away from having smoke blown up my skirt. Give me proof as to why something works better. Quantitative Proof. Show me the numbers and I'm in. Tell me it has magical properties you can't share but that they really work really awesome, you have lost me forever.
Paying more didn't make sense other than the marketing to charge people more money for bottles with cute looking stoner friendly/weed looking labels. Given that the basic cost of using the Greenway powder product with the semi expensive DynaGro Protekt for a total cost of around $.09 per gallon made really good sense to me. Using the Greenway also seemed to be rather simple and straight forward. K.I.S.S.
In the end I guess it all boils down to Yield vs Cost of production. We do that with lights and size of grow areas. Why wouldn't we do the same with nutrients. If I can grow Cannabis for a lower cost of nutrients and lights comparatively to a higher cost, at what point do we see diminishing return on the increased investment. I bought a second light that matches my first and I will amortize that cost over several grows. Nutrients are a single use item, it's basically a pour to waste, gone process. If you pay more to get a slightly larger yield what do you really get other than bragging rights. For me I like spending less to get a similar yield at a much higher price. Does the increase in price also radically change and improve the taste or high? Those are questions for those with much more experience than myself. For me my palette just isn't that refined to know I guess.
In my little corner of the world, I kicked the tires on several nutrient lines.
In the end, the ease and cost of the Osmo+ system gives it a significant boost over other feeding and, to Tead's eye, seems to live a bit deeper in the K.I.S.S. waters than any of the liquid or even powder based systems.
In the end, the ease and cost of the Osmo+ system gives it a significant boost over other feeding and, to Tead's eye, seems to live a bit deeper in the K.I.S.S. waters than any of the liquid or even powder based systems.
Why not just trim it to match the pruning/harvest mass loss? Like people do when refreshing mother plants (etc.) yearly or so.
I’m using Osmo+ in my hempy Sungold (50g in 4 gallons of perlite). It loves it, and I do too!
So far, no sign (or smell) of root rot in my revegging Auto Jack.
If I was just starting out - and didn't know who now owned the company
- I'd probably use General Hydroponics' Maxi series (MaxiGro and MaxiBloom) . Or one (or more) of the Jack's Classic products.I can't remember what the Maxi stuff worked out to per gallon, but it was cheap. Can get a 2.2-pound sack of it for around $15, and I have seen the pair for $25 a few times.
I like the concept of Osmocote Plus, but think a dry product that gets mixed in with the water might provide for more accurate feeding - and when the grower wants to feed the plants, as opposed to when the combination of temperature and water content leaches ? amount of nutrients out of those prills.
I'd like to be in a position where I could compare the two, both indoors where moisture level (and to some extent, heat) was controlled and outdoors where a rain event meant soggy plants. As it is, I'll probably be using Osmocote Plus, but without any real scientific experimentation / control plants.
O+ gets the nod for ease of use, of course. I could state that measuring out a dry product at each watering (or ahead of time, in small portions) is relatively easy - and it is - but there's no denying that "measure once" is pretty much an automatic win on the ease-scale
.I know some use only the bloom component (MaxiBloom) at 7 mg/gal, which is supposed to give 92 N, 121 P, 215 K, 65 Mg, 74 S, 92 Ca (I think?). At $14.98 for 2.2 pounds, that gives 314 gallons @ <4.8 cents per gallon (and about half as expensive if one buys the 50-pound bucket). I would guess that the Osmocote Plus works out to be even cheaper (but that's just a guess). However, probably not so much cheaper that cost becomes a significant factor in one's decision.
BigBearNTexas
Well-Known Member
I’m using Osmo+ in my hempy Sungold (50g in 4 gallons of perlite). It loves it, and I do too!
I’m using Osmocote+ in my tomatoes this year. I’ve got 5 foot tall plants growing in 2 1/2 gallon hempy buckets. Leaves are huge on these plants!
I also had to zoom in on the plant, at first I thought that was the worst looking cannabis plant I’d seen! Lol
BTzGrow
Well-Known Member
@TorturedSoul & @BigBearNTexas I really like your thoughts and consideration on this subject. It helps me feel I'm heading in a good direction. In the moment I'm working on using up my current supply of DynaGro Grow and Bloom as I still have at least 3/4 of a quart each. Not going to throw out much less let it sit on the shelf gathering dust. I have a little over 2/3 a quart of the Protekt silica. If anyone has recommendations for a less expensive equivalent it would be helpful for future planning.
Did ya notice the LST? I have 2 leaders spiraling up the cage. That photo is from May 26. Those leads are now at the top of the cage.
Hey Tead!
Yeah, we looked at both GH Maxi series and Jack’s Professional Hydroponic. I’ll dig those up. As I recall, Maxi wasn’t bad, but I don’t remember the cost/gal.
Yeah, we looked at both GH Maxi series and Jack’s Professional Hydroponic. I’ll dig those up. As I recall, Maxi wasn’t bad, but I don’t remember the cost/gal.