My malawi fish tank has turned cloudy over night

Oky so its a new tank and I only have a heater thermometer, gravel an a filter in the tank the tank was really clear sunday evening and monday morning when I woke up the power was off and the tank turned cloudy I tried to keep the water warm by putting a container with warm water in the tank seemed to keep the water warm but water is still cloudy the ph is at about 7.2 and I'm trying to get it down can it be the ph level
Asked Sep 10, 2013

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