
RegularRebel
- 150
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Still paying for plastic bottles of calcium-magnesium? Want to be more ecologically friendly? Save money?
Let's do it. I will be sharing a simple and easy recipe to provide calcium and magnesium to your plants.
I have 2 recipes, but I will start with 1 that uses a more readily available ingredient... egg shells! If you are eating a healthy breakfast with eggs, don't throw away those egg shells! The second recipe I will post later uses calcium carbonate.
For this you will need clean and dry egg shells, white vinegar, Epsom salt, baking soda and water.
Makes 10 L
I'm going to write about the ingredients I have, but check to make sure what you are using matches up, and if not, adjust it. For example the white vinegar I am using is 25% that I dilute to standard vinegar strength, and yours may be 10, or 5% already so keep that in mind. You may not have to dilute yours at all. Crush the eggshells, it must not be fine powder, just crushed to small pieces.
1. 40 ml vinegar diluted in 160 ml of water = roughly 5% for a total of 200 ml.
2. Stir in 2 tsp crushed eggshells. About 5 grams. Let that sit for 1-2 days until reaction stops. You will see some fizzing and pieces of eggshell rising and falling at first. After 1 to 2 days this will have stopped.
3. Filter that through a coffee filter or cloth to remove any large solids into a 1 liter or larger container.
Add 800 ml of water
4. Add 1 tsp of epsom salt and stir well until the epsom salt is completely dissolved. *ph likely 5.0-5.5, so test pH
5. Add 1/8 tsp baking soda. *pH likely 6.0-6.5, so test pH.
Now you have a concentrate!
Dilute 1:10
Add 100 ml of the concentrate to 900 ml of water to make 1L!
Store any extra in a cool dark area, and use it within a week.
Cost for 10L? Pocket change.
Let's do it. I will be sharing a simple and easy recipe to provide calcium and magnesium to your plants.
I have 2 recipes, but I will start with 1 that uses a more readily available ingredient... egg shells! If you are eating a healthy breakfast with eggs, don't throw away those egg shells! The second recipe I will post later uses calcium carbonate.
For this you will need clean and dry egg shells, white vinegar, Epsom salt, baking soda and water.
Makes 10 L
I'm going to write about the ingredients I have, but check to make sure what you are using matches up, and if not, adjust it. For example the white vinegar I am using is 25% that I dilute to standard vinegar strength, and yours may be 10, or 5% already so keep that in mind. You may not have to dilute yours at all. Crush the eggshells, it must not be fine powder, just crushed to small pieces.
1. 40 ml vinegar diluted in 160 ml of water = roughly 5% for a total of 200 ml.
2. Stir in 2 tsp crushed eggshells. About 5 grams. Let that sit for 1-2 days until reaction stops. You will see some fizzing and pieces of eggshell rising and falling at first. After 1 to 2 days this will have stopped.
3. Filter that through a coffee filter or cloth to remove any large solids into a 1 liter or larger container.
Add 800 ml of water
4. Add 1 tsp of epsom salt and stir well until the epsom salt is completely dissolved. *ph likely 5.0-5.5, so test pH
5. Add 1/8 tsp baking soda. *pH likely 6.0-6.5, so test pH.
Now you have a concentrate!
Dilute 1:10
Add 100 ml of the concentrate to 900 ml of water to make 1L!
Store any extra in a cool dark area, and use it within a week.

Cost for 10L? Pocket change.
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