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Tank size:54 Litres
pH:7.6
ammonia:0.00ppm
nitrite:0.00ppm
nitrate:30ppm
kH: don't know
gH: don't know
tank temp:23.6C
Fish Symptoms (include full description including lesion, color, location, fish behavior):2 of our 5 Killifish have spent the last 2 days up at the surface next...