Remember that more nutes doesn't ALWAYS mean bigger, better, higher-yielding plants... if you're watering as often as every 2 days, i'd at least stagger the waterings with nutes only every other time. But if they aren't complaining (showing yellowish or burned leaf tips), then it's probably fine.

One thing you may want to try is to change your watering cycle to every 3-4 days and then increase the nute percentage, but even then i'd at least give them a break between nuted water by only using nutes every other time.... just my 2 cents. =)