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All-in-one Macro & micro fertiliser

DavidW

Member
Joined
1 Jul 2016
Messages
327
Location
East Sussex
Anyone used CO2 supermarkets 'All-in-one' Macro & Micro fertiliser? It's got good reviews on the site but wanted to know if anyone here has used it.

The jargon says it can combine the macro and micro element together because it also contains E300 ascorbic acid and E202 Potassium Sorbate which prevents mould and acts as an antioxidant. Just wondering if this is a good product or snake oil?

I've very new to EI dosing.

Here's what it says on the site -

Description
Any plant, whether aquatic or terrestrial, needs a variety of nutrients to grow and maintain a good state of health. In the wild these nutrients are provided by natural means but because an aquarium is a closed ecosystem those nutrients must be supplemented to maintain strong growth and good health. If those nutrients aren't supplemented the plant will eventually die, or certainly have a lacklustre appearance.

Plants require nutrients at different rates and volume, some are required at higher volumes, such as Potassium (K), Phosphorus (P), and Nitrogen (N) - these are known as 'Macronutrients'. Other nutrients are also required, but at lower amounts or concentrations. These are know as 'Micronutrients' and include elements such as Boron (B), Copper (Cu), Iron (Fe), Manganese (Mn), Molybdenum (Mo) and Zinc (Zn).

Sourcing, then combining all of these 'ingredients' can be time-consuming and laborious, and getting the quantities right can be worrisome. Our 'All-in-One Complete Macros and Micros Fertiliser' solves that problem by providing all of the macro and micro nutrients your plants will need for sustained growth, health and vitality. The pre-made package contains accurately-measured quantities of the following elements:

Potassium Nitrate
Monopotassium Phosphate
Potassium Sulphate
Magnesium Sulphate Heptahydrate
Chelated Trace Elements

E300 Ascorbic Acid and E202 Potassium Sorbate are added to prevent mould and act as an antioxidant which enables the Macros and Micros to be combined.

The ingredients provide all of the key elements needed for high-quality plant growth, by proving the three macro elements and the many micro elements. With our 'All-in-One Complete Macros and Micros Fertiliser' you can be assured that your plants are receiving all of the nutrients needed for sustained growth, health and vitality.
Is it okay to combine Macros and Micros?

The reason sometimes cited for not combining these two solutions is because the Potassium Phosphate (a macro-nutrient) could react with the Iron in the micro-nutrient ingredients. To prevent this from happening, we add a small amount of E300 Ascorbic acid to lower the pH of the solution which prevents this reaction from occurring. Ascorbic acid is otherwise known as Vitamin C, which is completely safe for use in the aquarium and will not cause any harm to fish, shrimp or plants
 
Hi David, a lot of commercial brands produce fertilisers which include macros & micros (tropica specialised, tnc complete, neutro +). I've read clive's EI dosing thread (sure you have) and think the iron and phosphate can (not always) mix to produce a insoluble precipitate if the layman mix the salts. I would trust co2 supermarket as I'd expect the additives required to prevent this are present in adequate amounts :) I read another one ukaps thread 'any use ei?' which was helpful but can't find :(
 
Absorbic acid is a reducing agent that keeps iron bound by the chelate in the presence of PO4. This makes all-in-one ferts possible.

Given that, the ingredients contained in this fertiliser are no different to other commercial fertilisers, so should work as any other fert would.
 
Absorbic acid is an acid that lowers the pH and keeps iron bound by the chelate thus cannot react with PO4. See graph below, EDTA & DPTA (the most common chelates) are 100% chelated with pH below 6'ish.
iron-chelate.png

Potassium sorbate is a preservative to stop the all in one fertiliser going mouldy.
 
Good to know, there try salts that you mix with water yourself. I think I'm going to use this as a stepping stone to eventually getting into EI dosing when I've saved up the pennies for a dosing pump ;)
 
I have three pumps now, one dosing liquid carbon as well all controlled via a PLC (programmable logic controller). DIY in extreme.
upload_2016-8-26_14-25-10.png
 
Bumping this up, any else using the all in one macro and micro from co2 supermarket? I find after about 2 weeks the solution starts to cloud / precipitate. I even started using half the recommended dry mix with 500ml of water and still it clouds after about 2 weeks. Any ideas on how to prevent this, ive still got about 500grams of the dry mix to use up and it does seem to work quiet well, after it starts to precipitate I generally dispose of the mix and create a fresh solution.
 
Try using either boiled (and cooled) or RO water to make your all in one mix. The hardness of the water can react with the ascorbic acid and allow the chelated iron to precipitate out.
 
I have been using distilled water from the local supermarket, will try boiled and cooled water next time.
 
Distilled water is better as it is "salt" free no calcium or magnesium or carbonates. So no further forward.

The chelates will break down in presence of light. Is your solution kept in the dark ?
 
I have a very similar setup to ian_m (basically copied it) and haved noticed any percipition in the 5liter containers so far, only had them fitted a short while plus they are in the dark too. Been using RO water myself from a unit i have at work.

Sent from Mountolympus via neural interface
 
Distilled water is better as it is "salt" free no calcium or magnesium or carbonates. So no further forward.

The chelates will break down in presence of light. Is your solution kept in the dark ?

Contamination and light....may cause mould.....use a well washed disinfected bottle!
Keep in the dark!

Thanks guys will continue with distilled water and start keeping the solution in the dark. Will disinfect the bottle when I make up a new mix.
 
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