Ok here's what i got... my cotyledon's are turning brown on the tips like they are starting to die or something, but my plants are still growing really fast. Is this normal or signs of something to come. Opinions please.
Think of the cotyledon's as baby food for your plant. When the plant is grown up and strong, it doesn't need the baby food anymore. Later in life it will eventually shed the first and second sets of leaves, and so on. It's normal as the plant grows up to shed the older growth to make way for the newer, better greenery.