You are probably going to get advice different from mine on this as I feel many people feel systems can cause excess nutrients. My feeling, however, is that if you have use an aerobic vs. a passive type of system: aeration pumps in the tank; adequate holding capacity; and a final state chemical tank, and maintain the tank with nuteralizing chemicals in the final stage, there will be very little or no determental impact. In a properly maintained system the water which flows out of such a system, although not of drinking water status, has very little bacteria or other nutrients.

Bing

"I love living. I have some problems with my life, but living is the best thing they've come up with so far." � Neil Simon,