I'd say if we are to "justify" the expense to beginners it would have to be based on the urgent need to prevent the spread of disease. Likewise, hobbyist whether beginners or not shouldn't plumb their pond discharge to storm drains or runoff to creeks and tributaries where eggs and fry might become nuisance populations warranting further government intrusion into our lives. A QT system can be built for cheap and likewise your pond discharge can serve your flower beds nutritional needs. Best management practices are the justification.