'Dry' as in dry start is still pretty wet. About like a well watered house plant. That is plenty of water to dissolve the dry ferts, but not enough to spread them around. The plants would burn because the water would be too rich with fertilizers in spots.
If you want to start with fertilizers in a dry start tank you can use the same slow release ferts that are suggested for a tank full of water, or you can dose using the dry ferts, though I would dissolve them first. In a dry start there is not enough water movement to thoroughly dissolve the ferts and distribute them around the tank. Dissolve them first and either syringe them into the substrate, mist the plants with them, or dilute them even more and water the whole thing to get it started, you are just using extra rich water.
If you want to start with fertilizers in a dry start tank you can use the same slow release ferts that are suggested for a tank full of water, or you can dose using the dry ferts, though I would dissolve them first. In a dry start there is not enough water movement to thoroughly dissolve the ferts and distribute them around the tank. Dissolve them first and either syringe them into the substrate, mist the plants with them, or dilute them even more and water the whole thing to get it started, you are just using extra rich water.
