If you are potting up from germination stage, I pot the compost up to the first leaves, (not to be confused with the true leaves) and use vermiculite on the surface of the compost making sure it's all around the stem, then water from the bottom but don't wet the compost to saturation point, it only needs to be damp, the vermiculite will go darker as it gets wet so you'll know when the compost has taken up sufficient water.
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If you are potting up from germination stage, I pot the compost up to the first leaves, (not to be confused with the true leaves) and use vermiculite on the surface of the compost making sure it's all around the stem, then water from the bottom but don't wet the compost to saturation point, it only needs to be damp, the vermiculite will go darker as it gets wet so you'll know when the compost has taken up sufficient water.