I see your plants are 10 and 7 days old, so you might want to keep it light with the mix. I personally got lucky with my combinations and didn't have any pH or lock out issues. My soil started at 5.5 pH and I use distilled water that is always around 6.4 after mixing up whatever looks tasty on any given day.
Just use your water at room temp. When feeding, try to get the temps of your mix as close to the temps of your roots as possible. Too cold and you'll shock them and she won't drink up for a while. just like the pores in your skin close when it's cold...
What I'd do sometimes is strain the mix before feeding and work the "leftovers" into the top layer of soil, then fed. Not every time, but often.
The way you describe it, you bought this mixture somewhere. Is that right? Does it have any instructions on the package? If it does, start with about a quarter of what they recommend. Less is more right now for your plants, and it's easier to build up your plan than deal with the problems you might cause from over doing it.
Make sure you check your pH after mixing and adjust with the lemon juice or baking soda. (Molasses also brings down ph)