How many times should I add nutrient solvent to my plants in my hydrophonic garden and what is the perfect doze or concentration percentage to add to each plant ?
Knowing that I added 2g of micro nutrient powder and 3g of macro nutrient powder on 3 L of mineral water how often should I add more solvent ?

Do you mean 'hydroponic'? Anything you are adding the way of nutrients, is on the bottle of nutrients per volume. I am not going to figure it out for you not knowing the bottles you have of nutrients with instructions.

What trailing plant (perhaps 80 mm high) in eastern Pennsylvania has an orangish five-petaled flower (~ 3mm wide) with paired 12 mm long entire leaves, and square sided stem? This plant is found in lawns, etc.