Algea can’t grow if there is no nutrients, and see the goal is to have the plants uptake all the nutrient content so there isn’t anything for a 3rd party to consume. Thus you need a plant that is high growth speed which one of the easiest and cheapest to manage and buy is hornwort. Followed by a timed light schedule and I bet your issue will line out. If there is nothing extra for algea to eat it can’t survive.
Algea can’t grow if there is no nutrients, and see the goal is to have the plants uptake all the nutrient content so there isn’t anything for a 3rd party to consume. Thus you need a plant that is high growth speed which one of the easiest and cheapest to manage and buy is hornwort. Followed by a timed light schedule and I bet your issue will line out. If there is nothing extra for algea to eat it can’t survive.