I noticed that your new..
I would highly recomed checking out @b4rns grows, mainly the first 4 weeks and note, how small the pots are, how small the lights are, etc...
The pot you have prepared for your seed will not be needed for 5-8 weeks... you will need a solo cup and one gallon container for first 6-8 weeks before you ever get into a 3 gallon...
Also, if your growing with a 600w or less I would use soil from the bag, use water, microbes, and maybe a seeet product at the end...
This takes way less input than you think it does... "too much" is how you kill them
Best of luck to you
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