No worries brotha! I totally understand! I've been exactly where you are! One of the issue with amended soils is that they aren't amended for cannabis.. They are usually for tomatoes or some other legal product, so the levels are often to much for an auto in certain stages of life. Bio bizz lite is a medium we see in the infirmary pretty often.. Not to say it's a bad product, because Im sure it's good.. Knowing or figuring out how to work with it when growinfseems to be the common issue. There are also nutrients in your tap water.. Mainly calcium, but it varies from city to city. If you're going to be using tap water it's important to know what's in it.. So be careful running that plain water through the pot as you plan to.
You are right.. There is a bunch of bad, wrong, misleading information out there. That's why I learned to trust the plants.. Every plant is different.. But they are never wrong and they never lie, lol. They tell us everything we need to know, good and bad. That plant has been talking for weeks, lol, if that makes sense. Our job is to listen to them, not people like me on the internet, lol. My conclusions will only come from what I see from the plant. That's how I personally from healthy plants seed to harvest.
Not to blow your mind, or overload you with info.. But too much of one nutrient will lock out several others, making them unavailable to the plant. So let's use the calcium in your tap water as an example.. If you're using tap water only, you are adding calcium to the soil every time you water.. Too much calcium will lock out magnesium and phosphorus, making it unavailable to the plant. Meaning that even though there is magnesium and phosphorus in the soil, the plant can't access/use it because of the excess calcium. It's a delicate balance. Once the balance is off with any one nutrient, you will start seeing a combination of issues that look like deficiencies, but are actually nutrient lock outs.