Hello, I’m absolutely terrified. My mother sprayed flea spray 2 hours ago without my knowledge near my fish tank, less than a foot away. I checked the bottle and it is the extremely lethal to fish kind. My tank has a hood, but there is holes in it, and my airpump was still on. I’ve since covered the tank with a wet towel and turned off the airpump, but it’s way too late for that now. I have a betta and 2 corys. They’re all still alive and acting normal but I’m terrified they are going to die. I have a lot of duckweed on top of my water, and I’m wondering if that has protected the water from the chemicals? Please advise me on what to do. Should I take the duckweed out carefully and do a 50%, 75% or 100% water change? Would my fish already be dead if they were going to die from this? I’m going to get carbon filters to change out daily because I know this can help filter the chemicals. Please help I’m freaking out! Also I apologize if this is the incorrect forum. I’m not a complete beginner but I am a beginner with this problem!