nitrite removal

I have a 55 Gallon African Cichlid tank. Ph is 8.2. Temp is 81. HOB filter up to 60 gallons. Ammonia levels are 0- 0.25ppm. Very low nitrate levels. But verrrrryy high nitrite levels... above 5.0ppm. Tank is cycled and has been up and running for about a month. I dont overfeed my fish. When I...

I was given around a dozen platies roughly 3 weeks ago to help cycle my 55 gallon tank, throughout those weeks I tested my water every other day or so and I cleaned the gravel and did small water changes to keep my nitrites low enough to not kill my fish, today my nitrites dropped pretty damn...

Help i have high nitrate in my tank! Nitrate: 35-40 ppm Nitrite: .25 ppm Ammonia: .25 ppm how do I control it? I do pretty frequent water changes 1-2 times a week

Nitrate, nitrite, & ph. What should they be? Right now. Nitrate 20 ppm Nitrite 3.0 Ph 6.8

Aloha! I have for sale live macro algae that i harvest directly out of the ocean. I have my marine commercial collectors license for hawaii state. Species available are Ulva Bryothamnion Enteromorpha Gracilaria Halimeda Sargassum kelp Im selling two pound bags that contain a mixture of those...