Auto Big Cheese

The one tip is pointing down leaning towards N tox, but i don’t think you need a flush or anything, just let it use it up and lower your feeds concentrations. Ph of 6.3 is good and temps look proper as well. I would switch the lighting schedule to 18/6 as every living thing needs rest. Plants do some important things in their down time. I’d aim for around 35-40DLI in terms of over all light, you can find a PPFD to DLI converter on line and you just reference your manufactures specs. Good Luck!