.. and good plant growth can only be achieved with non-limiting levels of everything - and because plants become limited long before algae, the nutrient-limiting-aproach is a dead end for planted tanks.Peter(09) said:Finally, I suspect that what ever it is that actually stops algae growing is as yet not fully recognised, there is something associated with plant growth that stops algae growth, but thats just a gut feeling.
Plants need continous high levels of nutrients to grow well. If one nutrient limit the growth of plants ammonium rise and trigger resting algae spores.If there are levels of nutrients higher than the macrophyte population is able to absorb/utilize then algae will pick up the slack.
Limiting = Algae. Stable high nutrient levels = Resting algae spores and phenomenal plant growth.