high nitrate

I have a single Molly and a neon tetra living in my 10 gallon tank. One Molly died and my other 5 tetras died. I have test strips and nitrite and nitrate are high. The kit says to do a water change so did 30% one but there's no change. I would buy more neons but I don't want to risk anymore...

Let's start with the history: I started a new tank (65g) about 3 months ago (red sea reefer 250 g2) - I skipped the cycling by using liverock & corals from old tank. - Inhabitants since day 1: 5" medium Powder brown tang, 3" small blue hippo tang, 2 clownfish, 1 damsel, 1 bi-colour blenny and 1...

Hello, This is my glass after only 24 hours. I have needed to clean it everyday. You can see where my turbo snails are helping. What can I do to keep the glass clean longer or what is happening here? Fish and coral seem happy. All parameters are in normal range except Nitrates are around...

Hello! trying to help the tank recover from a skimmer that broke and wasn’t working for 2 or 3 weeks. Everything looked great so I didn’t test ( I’m kicking myself ) while I figured out how to get it running again. Frogspawn started looking a little depressed this week & I just got the skimmer...

Hey all. I have a biocube 32. Currently on day 15 of the Dr. Tim fishless cycle. My current readings are: PH 7.8 (and dropping) ammonia .25 (and dropping ) Nitrite at LEAST 5.0. That’s the highest the test kit will read and Nitrate also as high as the test will read at 160. should I do a water...

So just 2 days ago i preformed a water change as my nitrate levels read at a high 25. I’d say I did about a 45% water change with r.o water. But when I checked again today my nitrate readings are exactly the same? The only thing I can think of is doing another water change, but i don’t want to...

What is the maximum nitrate reading you know of where corals were kept successfully? What is the “breaking point” for the hardiest of corals? What corals are the most tolerant to high nitrates? Please input especially if you have large predatory fish! Thanks!