so, i got ich in my 75. so, standard heat treatment. im trying to heat it to 90 because its planted and didnt want to add salt. but for some reason 600 watts of heating power is only getting it to 85, both heaters are turned up all teh way but they stop heating at 85, even though the heaters go up to 90. im using a digital probe thermometer, two in fact, both read 85. so, what im wondering is will the pothos in my filters tolerate salt treatment, ive got mostly java fern and anubias which will tolerate salt, ive done it before. i dont know about the huge pothos in my filters though. any advice on how to get the temperature up or if the pothos will be ok with salt will help greatly. thanks in advance