Hard to say, you want to plant to get enough water to stay happy, but you don't want your hydroton to stay constantly soaked IMHO. Plants like yours like short drying periods I've heard. Thats why you only flood 1 or 2 times a day with an ebb and flow, it gets everything wet and feed, and then lets everything dry out and breath in between.

But a drip is different, my guess would be that you're good, and you'll need more flow as the plant grows. Just watch the plant, if it gets droopy and the hydroton is wet or moist, then it's probably too wet.