re: My 1st Grow Ever - Incredible Bulk
I agree, LEDs are intense in their broad spectrum of light colors and most require a minimum distance between canopy and reflector in the 12"-18" or 20" range, not an LED guy so you'll have to research this more. Also, I am seeing symptoms of over watering, but in your system, you kinda need to keep them wet for the most part. How often are they watered? I assume your tri meter converts the EC to PPM at a 0.5 conversion ratio? If yes, I'd think the PPM is just a tad high, and if your seedlings are sativa dom, the symptoms on the leaves may worsen. A "possible remedy" is to add plain water to dilute the nutes down some. Also, ready yourself if the remedy you do find does not show results right away. I noticed a lot of purple in both, is that genetic or stress?
Those questions are mostly rhetorical, I just wanted to share my thoughts from what I'm seeing. There are many very good resources here on 420, especially in the "how to grow marijuana" forum. Learning to diagnose deficiencies, toxicities and lockouts is a bit intimidating, so just focus on trying to diagnose those spots on your leaves by spending some time typing a few descriptive words into the 42o search box like "rusty spots on seedling leaves" and the like and read through a few different archived threads as someone else probably already went through the same exact thing and found the culprit and remedied it.