Ph Drops To 4

Discussion in 'pH' started by rajika4ever, Apr 17, 2017.

  1. rajika4everNew MemberMember

    Only in one of my tank due to ph drop all my fishes died over night. Then i did 100% water change and check the ph it was 7

    Then at night I checked again... It has gone down to 4 now..

    There is some kind of yellow foam is floating on water and water is smelley. There is no fishes.

    What could be the problem
  2. AvalancheDaveWell Known MemberMember

    Is there a lot of decomposing matter in your substrate or filter?
  3. rajika4everNew MemberMember

    No nothing.
  4. Little Tank of HappinessWell Known MemberMember

    Pictures? What test kit are you using?