Anyone that is using Dr Earth, I have a few questions.

Decided to go all organic with this current grow. I am using Fox Farm Ocean Forrest w/ 30% perlite as a base in a 3 gallon smart pot. Not sure if the FFOF falls into that organic category, but it seems good enough for me anyway. Here is my plan for feeding:

-No nutrients until week 4 top dress to use up the nutrients in the OF initially

-Introducing water-in Mychorrhizae today and then once again every 2-3 weeks (Bigfoot Mycho) [1tsb/gallon h2o initial mix - 64oz poured into 3 gallons of medium]

-Feed with Molasses [1tbs] twice per week (2 out of 3 waterings weekly)

-Top dress Dr Earth Flower Girl (3-9-4) @ week 4 [2tbs/gallon of medium] (I assume it takes a week or so for the top dressed nutrients to activate?)

-After week 4, add Fox Farm Big Bloom [12ml/gallon h2o] once per week in addition to the molasses to feed the microbes once per week.

-If the plant looks like it's going to finish past week 10, add another Flower Girl top dress to finish it out @ week 8.

Here are my questions:

How can I supplement Cal/Mag, or would I even need to? I am growing under a qb board, and it seems to make my plants want more Cal/Mag.

Does the Fox Farms Big Bloom (OMRI Organic) act as a 'tea' so to speak? I have read that it is good to use as a microbe feed.

Would I have to PH my water? To be honest, I am a bit afraid of not adjusting the PH. My tap water is good at 100ppm and it sits around 7.4-7.6ph consistently.

I read that with Myco, the roots expand their surface area, and take in more nutrients and water. As result, you should feed and water less overall because of this. Would reducing my water amounts by 30% and the top dress of 2tsb per gallon of medium (6tsb for 3 gallon pots) of Flower Girl, be adequate? Either way, this might just anecdotal and I can play around with the amounts myself.

Previously I was just using the Fox Farm Trio - Tiger Bloom, Big Bloom, and Grow Big. However I was on a heavy feeding schedule with my current photo run (finishing up), where I was feeding @ 1100ppm for three waterings in a row. It took a lot of time to mix up the nutrients, correct ph, etc etc. I was hoping that switching to the schedule I listed out above would allow me to just water mostly with the exception of mixing in the molasses and Big Bloom 1-2 times a week. Aside from the time saved by just plain waterings, I also just want to be fully organic.

Appreciate it!

up

I have been using Dr Earth as my base nute for the majority of my growing.
I use it more mixed in the soil and for teas than top dressing. My friend usually does all three.
He top dresses week 3 and 6 and we use 2 or 3 teas a grow and that's about it.
Top dressing works from the first time you water over it and each time after that.
As far as those other bottled nutes, go easy on everything and aerate it.
I messed with the ph once with soil, disaster. Your tap is way better than mine 8.5. After adding nutes it comes down.
Also I wouldn't add anything after week 7 if your plants look healthy, maybe just some molasses. Let them use up nutes and get a nice fade.

side note, I just bought a new bag of Flower Girl and noticed they omitted Bone Meal and Feather Meal.
I used to use the Tomato and Veg with Flower Girl 50/50. I might switch back to that blend to get the missing ingredients.