I know the folks at BioBizz recommend using their nutrients with every watering. To quote them: "We prefer you give water with Biobizz every time you water the plants. If you switch between just clear water one time and water with nutrients the second time, you’ll have every time different Ec/pH levels. Every time the plants need to adjust." I assume that would apply to any kind of water amendments, whatever the brand, organic or not.
If you're going to use nutes every watering, make sure to read how many feedings the dosing charts are based on and tailor the dose accordingly. For example the official chart for the BioBizz range states it is based on watering "2 to 3 times a week" but if you're watering more frequently and dosing every watering you'll want to lower the recommended dose so they still end up getting the same amount each week to avoid overfeeding.