Hello everyone so this is my first time growing hydroponically. Now I started this almost three weeks ago, there are no nutrients in the water, I have some coloring on my leaves and not too sure what causing the problem because some leaves are fine. I'm worried that it may be my water because it is well water and is quite hard. I just watch the ph right now. The ph ranges between 5.5 and 6.3. I also have this long single root in the water. When should I add the nutrients I don't want to do it too early and lose the plant. I've posted some pictures below to show you guys. All kinds of advice is welcomed thanks
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