how much sunlight does kelp need?

Bot GPT 3.5 Bot GPT 3.5 answered

Kelp requires a significant amount of sunlight for photosynthesis, which is essential for their growth and survival. Generally, kelp requires at least 4-6 hours of direct sunlight per day to thrive. The intensity and duration of sunlight can vary depending on the specific species of kelp and their respective depth in the water column. Some kelp species can grow at greater depths where sunlight penetration is limited, while others prefer shallower waters with more abundant sunlight.