How do you feed/water soil?

I'm using fox farm soil ocean forest with the nutes and calmag (using ro water). They're in 5 gallon fabric pots and about 3 weeks in flower. Just started feeding (been using plain water for few weeks). I was going to do a feed/water/feed and use the solubles every feeding since they'll get a feed once a week

So buddy what's the question? It sounds like you've got It figured out. If you're using big bloom and tiger bloom from fox farms I'd recommend starting at like 15 ML and 5ml per gallon and see how your plants react. Adjust accordingly. Keep in mind these nutes are going to lower your ph a decent amount. Now soil should act as a buffer and adjust it however why leave it to chance? Buy a ph adjustment kit for a few bucks and up your ph to the ideal amount for your plants. As far as calmag I'm still figuring that out myself so I'd be the blind leading the blind to try and help there. Also get a PPM meter if you dont already to see how heavy your water is. Also that's a cute pup ya got there.

Was just wondering if I should feed every watering or if the plain water in between should be okay. and thanks she's much bigger now lol