My ten gallon has had constant cloudy water for the past 5-6 weeks and it won't go away. I've been doing 15-30% water changes once a week with 0 ammonia, 0 Nitrates and 10-20ppm nitrates before water changes. I have two balloon red eye mollies, two otocinclus, and a bristlenose pleco that is almost ready to be moved to my newly established 30 gallons. I've never had this problem before and this is an old established tank (more than 1year old). I am concerned because I netted out a dead oto two days ago and I had those three for more than 6 months, my first fatality. I think it started when I removed a piece of filter sponge that was in the filter but i haven't noted a spike in ammonia or nitrates for it to be a min-cycle and it should have settled by now. I had to remove it because the filter was getting clogged. It's a top10 filter and they discontinued the 3 in 1 that come with the sponge and now have the 3-in-1 in one piece which means that when you toss it all the bacterial is gone defying the purpose of providing biological filtration! I can't invest in another filter for another week or so and I am really tight on money. So any immediate and natural solutions are appreciated. I am afraid to over disturb the bacteria in the gravel too.