FA in ponds after several years of being rare often becomes more abundant due to 10 yrs of nutrient (organics) accumulation -buildup. Presence of other plants can reduce nutrients available for FA - competition. Killing or dramatically reducing the weeds can make more nutrients available to be used by FA or phytplankton. Nutrients mainly nitrogen and phosphorus "feed" the FA. Often nutrients are abundant enough in a new pond to grow FA right away. Not having very much FA may not be due to fish eating FA but due to lower nutrient concentrations.
Last edited by Bill Cody; 12/04/12 09:56 PM.
