WhiteShadow Posted March 4, 2021 Share Posted March 4, 2021 Hello All. I set up a 10 gallon quarantine tank with only a sponge filter and a heater in it. The heater is not heating up the water to the set temperature, It goes on for a min then turns off. I think it is sensing the heated water right around it and not staying on long enough to heat the 10gallon aquarium. It is a brand new Oase Heatup 50. How do I get water flow around the heater with only a sponge filter? Will the sponge filter be enough flow to get the heater to work properly? Link to comment Share on other sites More sharing options...
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