This rate of growth is such that the fish waste alone is enough to supply the needs for the plants.

这个生长速度是基于鱼便便已足够提供水草生长所需养分的条件下得出的。

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"We're talking plants floating on the surface of the water, using the fish waste as nutrition," he explains.

“我们要说的是水生植物漂浮在水面上，使用鱼的排泄物作为营养源，”他解释道。

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By tweaking his filtration system to leave a certain amount of fish waste in the water, plants can be grown in the same tank.

他通过对他的过滤系统进行调整，保留一定量的鱼的排泄物在水里，这样的话，植物就可以和鱼共生于一池了。

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There is an increased threat of infection and disease from polluted waste, and from eating fish that swallowed waste.

VOA: special.2009.09.22

It also has a settling pond and compost heap to keep fish waste out of the Pigeon River.

FORBES: Magazine Article

All this time, the fish was crapping out waste and dripping out eggs.

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Brian figured that if he could solve the technology and logistics problems required to anchor a fish farm 10 or 20 miles offshore, where swift currents carry away and disperse the waste produced by concentrated fish stocks, it would allow the farmed fish to swim in the same fresh water as their wild cousins-the best of both worlds.

FORBES: Regulatory Uncertainty Drives A Fish Farmer To Foreign Waters