I've looked everywhere online I had no luck maybe someone can
no one will likely know the specs, because there are no real standards in the LED market... wattage for example means nothing until you examine the claim and see what is really being pulled from the wall. I would start at 18" and see how they do. Leaves do turn up ... whether they are being damaged is the question. I suggest getting a cheap $35 LUX meter from online, and then compare your numbers with what folks say is appropriate at each stage. I built my own light and then did a study on it, relating its LUX power to each stage I would be using it at. Check it out:
here
You didn't get the correct Fox Farm nutes... I gave you the 6 specific names up above for the basic trio and then the next level supplements.
You will learn, but the base pH of your water is most likely within 2 or 3 points away from neutral, like 7.1 or so. Almost always to get to the desired 6.3 pH of your incoming water on the water only pass, you will need to use a pH down product, such as diluted battery acid or the much more expensive commercial product. Nutrients are acidic, so after adding them to your water on a nute pass, you will need to use a pH up product to get the mix back to 6.3 pH. I like very diluted pickling lime (stored in a glass jar)... again, very cheap. If you didn't notice, I am strongly recommending using the soil's ability to store nutrients for a second pass. Feed/water/feed/water, all through the grow.
If you have had a chance to download the Fox Farm feeding schedule, you will likely have some questions. The periodic flushes are necessary, 3x the container volume. Feeding once a week equates to feeding every other time, with plain pH adjusted water in between. It's all very confusing at first, so please hit me up here if you have any questions... I know I did.