CAL-PHOS
1.Collect a bunch of eggshells and wash to remove inside filaments. Remember, you can also use bones and other good sources of calcium like seashells, clams and oysters, etc. Likewise, if you only want calcium, even limestone can be used, or simple lime. Egg shells for soluble calcium. Animal bones for soluble phos.
2. Pan fry the eggshells or bones. Fry until some are brown/black, some white. The burnt shells are your Calcium source while the white are the Phosphorus source.
3.After roasting the eggshells or bones, grind them up. You can do it manually, with a mortar and pestle, throw them in a blender or electric coffee grinder, etc.
4. Add them to a jar and add 5 parts vinegar by volume. For example, if you have 1 cup ground shells, add 5 cups vinegar.
The acid in the vinegar helps digest them. You will notice bubbling as this process converts the ingredients to liquid calcium phosphate.
5. Wait until tiny bubbles disappear
6. Seal the jar and ferment for 20 days.
7. Filter into another jar
8. Now you’ve made your own Calcium Phosphate
NOW :How to Use
Mix 1 tbsp per gallon
Plants
Spray on leaves during transition phase to flower, and when fruits are large and mature
Transition Phase: Induces flowering, eases nutrient demands of transition phase, strengthens flowers
Mature Fruit: Strengthens plant stems, leaves, fruits, helps fruit mature properly for optimum sweet flavor.
You can also skip the vinegar and compost the cal-phos and feed them to worms. Then you will have compost with phos solublizing enzymes and high phos compost.