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Jack's 5-12-26, Calcium Nitrate and Epsom Salt. I use Monopotassium Phosphate as well for part of flower.

I buy my powdered nutrients (including Jack's 5-12-26) from @AquaTerra's shop, which is located in Vancouver: https://www.gardentech.ca/

Glucoheptonate is a chelating agent that is bound to the Calcium in concentrate form. It is made up by causing Hydrocyanic Acid (Hydrogen Cyanide and water) to act on a solution of Glucose. I suspect the company changed formations to reduce the level of Nitrogen, by replacing the Calcium...

How much are you giving the plants? What does the bottle recommend?

You're showing Nitrogen deficiency. What's the EC/PPM of your nutrient solution?

I wouldn't even remotely begin to trust a site if they've got even one blatant scam listed.

I went to have a look out of curiosity. On their site, they have this pH meter, marked down from $126.50 to $28.73: https://www.bghydro.com/sale-products/sure-test-pro-ph-pen-w-replaceable-probe-005-atc.html Looked around for comparisons of the same unit, which turned out to be cheaper than...

This entire what appears to be criminal fraud would never have been spotted if OP didn't do his homework on verifying the components. Good on you, OP.

No, you can't. That's not how it works at all. Research "how do I reverse a female cannabis plant with Colloidal Silver".

No. The medium has to dry out between waterings. If the soil is kept wet at all times, the roots will rot.

The brown/black/purple spots on the leaf are caused by a Phosphorus deficiency. I don't see any Calcium or Magnesium problems. Need to know your medium, nutrients you're using and how much, as well as the pH of the nutrient solution you're giving your plants.

I would personally like to see the grows you've done in the same conditions that went all the way through flower and harvest. Your tent bottom looks like it's never been used before. That tells me you either haven't grown before, or just started a brand new grow in a brand new tent with brand...

Don't know anything about the nutrients you have, but I can tell you that you're experiencing the early stages of Calcium (Ca) deficiency, and a bout of fingernails that need to be cut. It also appears as though you may have wildlife wandering free in your growing environment. A white cat perhaps?

I've always suspected that, and that's how I treat my outdoor gardens.

I've often thought "maybe if Trump's kid is forced into an inner city public school, he'd change his mind". But then remembered that Trump doesn't care about his kid. He is capable of only caring for himself. So let HIM sit in the classroom he's forcing kids to go back to. Without a mask. With...

That's way too high for any medium. I don't necessarily disagree with soil growers who don't check pH because I've never grown in soil indoors, but checking pH is always a good habit have, particularly if you ever decide to switch mediums. In soil, 6.0-7.0, targeting around 6.5.

Full blown male plant. Those are all pollen sacks.

Researching isn't stating "I'm buying this, what's in each bottle and how do I use it?". That's doing no investigation at all, and asking other random strangers what the product is, and how to use it. Your grow will not succeed using this strategy. Research is investigating for yourself, then...

Why are you buying something before you even know what it is, or how to use it?

I only use Sunshine Mix #4 inert peat-based medium and have for quite a while. Before I switched, I used Promix HP (inert peat as well) for six years, but they went through a spell where the medium's pH was fluctuating wildly batch-to-batch, which is why I switched. I definitely recommend...