chasv77answered grow question 4 years ago Ummm, maybe I am missing something here, but why are you planning on using Cal-Mag, in addition to the FF Trio?
I used that with Botannicare's Veg and Bloom nutes.
FoxFarm Nutes are a package to use together. Their nutes have the minerals required when using distilled or RO water. - - > I only use FF for my grows.
Cal-Mag will add more minerals, MAYBE disrupting TDS/PPM balances or levels.
FoxFarm has their soil feeding chart on their website, measured in oz's/gallon, by week of growth.
Also, while I am on my soapbox, if you use any kind of super soil (Ocean Forrest, Roots Organic, etc), you should not do any kind of feeding for at least 30 days.
Believe me, if you start feeding (especially every day) early, you may well end up with nute burn, before ever getting to flower.
If your strain is known to drink up nutes, I would feed every 3rd watering, "starting" at 50%, after the 30 days.
If your strain is sensitive to nutes (especially with super soil), I would not feed until 6 weeks, and start at 30% strength.
GOOD LUCK and good growing!!! 👍