I have seen products from that company before but am not familiar with what is what with them. Also received a few samples from a factory rep last year but have not had the chance to look over any info on the packages or on-line. Maybe someone else has been using that line of fertilizers and amendments.Feeding plants above.
Good start. Sometimes new growers tend to water a certain amount every so many days whether the soil is dry or wet. Then they end up with new problems because the soil is continually saturated.I feed plants when pots feel light.
Another soil that is popular with many here. You will want to consider getting some more since it will be time to transplant sooner than later. Get the Fox Farms Ocean Forest for the transplanting.Growing in soil, only using Fox Farm.
You are in a natural soil and not a hydroponic soil. Not much that checking the runoff will tell you unless you have specific questions. I don't think that it is something to worry about at this point considering that you are using a known soil.Need guidance on checking runoff as I’ve never checked it.
The link below will lead you to a message posted by @Emilya Green about 2 and 1/2 years ago and for the most part it is about checking the pH in a pot of soil. It is worth the minute or two it will take to read it and afterwards you might not want to go down the "checking runoff" rabbit hole at this time.
https://www.420magazine.com/community/threads/lowering-the-ph-in-soil.490654/post-5101462