I know zilch about PS products and have no dog in this hunt. But unless you're an organic grower,
Sea Green isn't going to be all that beneficial as your chemical feteralizers are just going to smoke all the beneficial critters you're buying in SG.
A lot of recreational growers, grow because they like too. You can also buy weed at the store, so why bother going through the whole hassle of growing? (Rhetorical question). Making compost teas (AACT) is actually pretty fun (a lot easier then making beer), relatively easy, and producers the beneficial microbes your girls will love. Growing Sea Monkeys is more challenging. Will you grow more microbes (in a couple days in your garage) then
Sea Green? Almost assuredly no. But you can make some great juice, and with a little research tailor your tea to combat pest, enhance your soil structure, buffer your ph, feed beneficial microbes, etc., for your entire yard. For the majority of recreational growers spending $12 on the excellent book, Teaming with Microbes, is probably a better use of your money.