Many years ago I visited a store that featured a display of freshwater planted aquariums, and I immediately became enamored with them. I was entranced by the lushness of the plants that can grow underwater and by the symbiotic relationship of the aquatic flora and fauna. I had to have one. Eventually, I found a good-sized used tank that was reasonably priced. I installed all the hardware, put down the substrate, filled it with properly-treated water, and added the first plants and fish. It took some time, but soon enough the plants began to grow and to spread. In a matter of weeks, the aquarium was nothing short of stunning.

But it didn’t take me long to realize that the same conditions that cause the plants to thrive also cause algae to thrive. The same water temperatures, pH levels, and lights that cause the plants to grow also cause algae and other unwanted organisms to grow. And from that moment forward, I was engaged in a never-ending battle to foster the former and eradicate the latter. It was a battle I eventually became weary of fighting and after a couple of years I emptied the aquarium, sold


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