can I make my own solutions for ei? how long do they last? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 08-21-2014, 11:52 AM Thread Starter
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can I make my own solutions for ei? how long do they last?

For k2so4 and kh2po4 and my micros, can I make them in a 500ml or a 1l bottle?

How long do they stay good for? Fridge or room temp? Clear bottle or not?

Does this use up more dry salts in the end?

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post #2 of 9 (permalink) Old 08-21-2014, 12:18 PM
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Even in the fridge, I've found cleanliness (the water used, the bottle, and the pump)
is very important. Unless it wouldn't last more than a month for micros, IME.

There's a recipe of all in one fert using ascorbic acid and potassium sorbate as preservatives.
I'm using them (mine is micros/macros in separate bottles though) now, works great.
http://www.theplantedtank.co.uk/allinone.htm

K2SO4 solubility may be an issue, depending on the concentration.

Storing it in a dark place is preferred.
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post #3 of 9 (permalink) Old 08-21-2014, 02:18 PM
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Originally Posted by philipraposo1982 View Post
For k2so4 and kh2po4 and my micros, can I make them in a 500ml or a 1l bottle?

How long do they stay good for? Fridge or room temp? Clear bottle or not?

Does this use up more dry salts in the end?
Absolutely and they will keep. Macros are easy and will keep. I buy name brand for the micros personally, but I know a lot of people that do make them. Fungus can be an issue on some dry micro brands, but these can be resolved with refrigeration, type of container (limiting light exposure) and limiting shelf time.

There are a number of calculators out there that will help you make your mixtures. This is one that a member made here years ago.

Don't confuse yourself with numbers. This is the process for determining how to make the mixture.

Figure out what ppm you are looking to achieve of the each nutrient of the fertilizer you are adding per dose (think as if you were just going to dose dry).

What is your target N, P, K.

Then, using the mixing bottle you are looking to use, determine what is the easiest volume of solution that is convenient for you to dose. There are a lot of nifty containers out there, some with interiors dosing volume areas.

I personally dose my ferts in 15 ml volumes. So I set all of my intended dry dosage to that volume. So, for a 900 ml container, I get 60 doses. I just multiply the daily dosage by 60 and add to the container. You are done. The calculator I linked you too will give you assistance with this, but you should understand what it is doing.

I recommend you getting a scale. Makes things a lot easier to measure than just fractions of teaspoons.

Hope this helped.


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post #4 of 9 (permalink) Old 08-21-2014, 04:53 PM
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Quote:
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For k2so4 and kh2po4 and my micros, can I make them in a 500ml or a 1l bottle?
Yes
Dry dosing and Nutrient Solution Recipes

Quote:
Originally Posted by philipraposo1982 View Post
How long do they stay good for? Fridge or room temp? Clear bottle or not?
For the most part, indefinitely.

Room temperature is fine. Many store micros in the fridge to reduce the chances of mold growth. Adding either Excel or vinegar to the mix can prevent this.

The bottle doesn't matter for the macros. The micros are photosensitive so a bottle that protects the solution from light is preferred. I just store mine in a dark place.

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Does this use up more dry salts in the end?
As opposed to dry dosing? If so no. The same amount of salts are used in the end.
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post #5 of 9 (permalink) Old 08-21-2014, 04:55 PM Thread Starter
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So why dry dose at all? Why doesn't everyone make up mixes?

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post #6 of 9 (permalink) Old 08-21-2014, 04:57 PM
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Personal preference. Some find it easier to dose dry some don't. There's no difference how you supply the salts as long as you dose them.
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post #7 of 9 (permalink) Old 08-21-2014, 04:59 PM Thread Starter
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So micros in a none clear bottle and kept in the fridge and macros in any bottle kept in my aquarium.cabinet

Does this sound good?

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post #8 of 9 (permalink) Old 08-21-2014, 06:15 PM
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Sounds fine to me

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post #9 of 9 (permalink) Old 08-21-2014, 06:16 PM Thread Starter
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Thanks everyone

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