What you are creating is a PH bomb. The phosphorous is easily bonded with calcium. It is a very tight bond. Now when your PH changes to 8 or around 6 even which is a big swing the bond will break. The break will then be a massive release of both phosphorous and calcium. At this point they will all become available and water soluble.

Now your 10-52-10 and 10-52-4 is a very very good fert but can be touchy. I would keep your PH high and your alkalinity high and let nature break the bond. As it is used both phosphorus and calcium it will turn into a colloidal state. This state is very active but very safe like milk. You can drink milk but you do not want to leave it spilled on your nice oak coffee table or it will strip the finish off.

Chemistry has some very different states in nature and with fertilizer we are just giving nature the fuel. How it reacts and changes in nature is very different.

Time is most important let it degrade naturally and keep your PH up. If it drops too low it will all release all at once and you will have a mess on your hands and be looking for more lime asap. The product is all in there and being released slow every day.

Water tests will give you what is soluble but it will not tell you what is available to tap from like a battery. Alkalinity or hardness kinda dose as long as you remember for the Alkalinity to be XXX and you have a PH of XXX there needs to be a balance to the equation. For each positive ion there needs to be a negative ion. If the PH flips fast the ions are then released with the break of that bond.

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