Ihave a farlly new tank and ther has been a big surge in nitrites please can somebody help me i have done 25% water changes and still the problem is there i have even bought a bag that you hang in the water that takes out all the nitrate and this has not hellped could it be the sand that i have in the tank or thepiece of wood if it is not fixed soon i fear i will loose some fish which include a breeding pair of kribensis and babys
help krib
help krib