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cut a square out of it half way down, using plastic nuts and bolts secure a piece of acrylic over the hole. add water and filtration and a heater(heat to 18'C). daily add a small amount of fish food untill NH3 and NO2 levels are at 0. exchange 20% of the water with fresh dechlorinated water untill NO3 levels are bellow 20ppm, add goldfish named joe.
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