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gh flora micro 500 ml

by General Hydroponics

Price: $11.75 + $46.03 Shipping
In stock

General Hydroponics FloraMicro, 16-Ounce

Price: $89.99 + $0.00 Shipping
Amazon Total: $89.99
Our Total: $57.78
Our Delivery You Save: $32.21
Pick-up You Save: $78.24
Last Updated: July. 05 2022
View Listing on Amazon.ca
The foundation of the building-block system. Provides nitrogen, potassium, calcium and trace elements. Combine with FloraGro® and FloraBloom®.
$11.75 + $46.03 Shipping
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Product details
Shipping Weight: 0.68 Kg
SKU: 2183

Manufacturer: General Hydroponics

Date first available: July 30 2018
Customer reviews: Be the first to review this item
Bestsellers Rank: #62 in General Hydroponics
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  Not a complete formula

July 08, 2016

Verified Purchase

No magnesium??

This blend of essential micronutrients, designed for hydroponic cultivation using pure water, is loaded with calcium and is missing Mg. Doesn't anyone at General Hydroponics realize that Ca and Mg are a team, and you shouldn't have one without the other? Sure, I can add Epsom salt to the water, but it would be nice to see a guideline as to how much to add per ml of FM for optimal Cal-Mag balance. Another missing essential mineral is silicon. Now I have to figure out how much potassium silicate to add.

Another fail is the bottle itself. It is impossible to dispense a small amount from such a wide opening. It needs a spout cap.

So with the addition of the missing minerals, and a tolerance for some spillage, this product is a good complement to seaweed extract and beneficial microorganisms that I use to keep my plants healthy.

Service Company Owner


December 09, 2017

Verified Purchase

The bottle looks like a quart, but turns out to be a pint (1/2 a quart). I didn't even know they made 1/2 quart bottles.

This is entirely my fault for not realizing that 16 ounces isn't a quart, but it would have been nice if the picture showed something else for scale.

I give the nutrient 5 starts and the picture 1 star, so I'm averaging out to 3.



August 10, 2021

Verified Purchase

Without micro nutrients your plants will not develop a strong root system. I have been using this for years to grow and flower the best of greenery.

Chris I

  Smaller container than its counterparts

April 22, 2016

Verified Purchase

This is a smaller container than the standard Gro and Bloom. SO i ran out of this very quickly. Bought a gallon of each to re-fill.



March 11, 2018

Verified Purchase

I was having some issues with my plants... this is an amazing product except I was sold a smaller bottle then expected

Marc; Real Human; Not A Robot!


September 28, 2017

Verified Purchase

My plants loved it. Personally, I thought it tasted a bit weird. Try mixing with vodka for a smoother taste.


  3 part nutes work

June 19, 2016

Verified Purchase

Tomatoes love this 3 part system. In only two weeks they grew like crazy.


  Four Stars

September 16, 2017

Verified Purchase

If this is what you need. It's only 16 ounce so it won't last long.

Edward Turnbull

  How much do I use?

April 09, 2018

Verified Purchase

I got the purple, red, green, but I don’t know how much of each

Dieter Dittrich

  Five Stars

March 24, 2017

Verified Purchase

Probably won't need to use it for another 2 months.

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