nutrient additives.....

[Weedfreak]

I just put some sprouts in coco coir/perlite/vermiculite mix 60:30:10 ratio recommended on this site. I purchased some coco-friendly nutrients from my local grow shop. Upon going on their website and studying the feeding charts, I noticed many supplements that enhance the different aspects throughout the growing. My question is: do they work? Do you really get bigger, denser, better tasting buds, or is it just overkill trying to make more sales?

[Gingerbeard]

In coco, I have found weed does not need but tap water until the sprout has come up a couple inches. Giving nutes to seedlings has killed seedlings. Then half for a watering or two. But our water providers are probably not the same.
I've never had a problem following the label. If you use the same brand for a long time, you might find a tweak works better in your situation.

[Bluey]

Half strength nutes to start so that would be about 0.4EC.

Growing in coco you may need a calmag suppliment depending on what calmag is in your water already.

Depending on the genetics and size of the grow you may need a PK supplement.

That's it pretty much.

Silicon may assist. I use it in veg.

[Bluey]

As I am certain you are aware but light levels especially fro modern LED'S do impact nute uptake and photosynthesis in plants differently which requires varying EC and nute ratios especially at different stages of growth and size.

Right now I only have 3 plants in the flower room. One is ready to harvest, one has 14 days or so to go and one only flipped yesterday. All different light and nute requirements and temp humidity ideal settings.

All of that means I must compromise as best I can to get good results.

The ready to harvest and 14 day to go want 22⁰C and low 30% RH, the just flipped 26⁰C and 60% RH, full veg nutes + Si & CalMg on the just flipped at 1.1 EC now to limit nute burn on newly exposed growth and PPFD probably around 450to500 but full bloom EC 1.4/5 and PPFD over 800 on the other two....it's a juggling act

[ZiroOne]

No. Im not agree with you. I told you befor, PAR level and light spec and plant size have no Sensible effect on nutrient requirements and optimum EC. Even if nutrient requirement changes it doesn't mean you have to react. The only element you MAY need to change its concentration in feeding solution is P during flowering.

Believe me... they are either liars or wrong.

[ZiroOne]

Instead of changing EC, find the average.
1+2+3+4=2×5
You can use 800 umol/s/m2 for veg. It gives you faster growth.
Instead of changing RH, dilute solutions.
You have made your work difficult with unnecessary complications

[golfnrl]

Weedfreak I wonder the same things. I use CX Horticulture nutrients. I just can’t buy into some nutrient lines that have some kind of formula to address some aspect of cannabis and the grow process. I grow in coco/perlite. The CX is really easy to use. I wash the coco in a strong cal-mag solution even if it comes pre-washed. I start the nutes at 1/4 strength and work up from there. Even with CX the main ingredient is water. I’m looking for a powder that can handle the weed grow start to finish w/o any add ins. I believe the plant’s grow conditions are more important than 14 different kinds of nutrients. With good basic nutes and the right grow conditions the weed will produce fat buds.

[Orggrwr]

In my opinion most of the supplements advertised are not needed and a waste of money. All I use is base nutes, cal/mag when using coco( not in soil), and for outdoor grows I use a kelp supplement for heat tolerance, and that's it.

[Bluey]

That's how I have mostly grown the last 20+ years. Pretty much exactly how I've done it.

Edit. I amended the soil with some pretty baked compost though to start and used it as a spreader mid grow also.