I agree with everyone above - drop it in a larger pot with chunky mix! It looks super happy with lots of good roots, so it should take off pretty quickly.
FYI - the spotting on your aclandiae seedling is completely natural, but it does indicate that it's probably not a coerulea (coerulea Cattleyas lack the "red" anthocyanin pigments). I believe that orchid breeders are having trouble getting a "reliable" coerulea variant of aclandiae, and many times coerulea parents are yielding inconsistent results. Sorry to burst that balloon, but it's still a wonderful species and I'm excited for you! I have an an aclandiae cross made with two alba parents, but the seedling isn't alba - the leaves are pigmented. It's about to bloom for the first time, and I'm excited to see how the flower will appear.
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David
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