So I went home for Christmas break 2.5 weeks off. I left my tank at my apartment. Before I left I dropped the timer to 7 hours a day with the co2 I did a big water change topped it off and lowered the filter so it wouldn't splash out after evaporation. I came back to the tank today, power must have went out at some point the tank light and co2 was shut off. The evaporation drained around 1/3 the tank and the whole tank was covered in green algae. The water temperature dropped down to 47 degrees, maybe even colder at some point. The fish (platy and fry) are however still alive. Shows how resilient these fish are as well as the plants which stayed alive. Here's the tank right now. I topped it off then going to let it get back to room temperature before water changes and clean up