Hey, According to Horst and Horst, The Dupla Mafia, the main benefit of laterite is that it contains micro nutrients especially iron. The reason it is in the lower 3rd of the substrate is that anoxic conditions prevent oxidation... Why can't we just use chelated Iron as found in commercial hydroponics powder? Cats Pride kitty litter in only pure clay. This provides - sited for + ions (nutrients) to bond. The commercial hydroponics powder also makes about a million gallons of Poor Mans Dosing Drops (ppmd) for under $30. Why bother with mix your own?
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