Boy i'm posting lots of messages here 
I've had fish tanks before but only ever small ones, I used to check the ph once a week and it was OK most of the time. I checked it 3 days ago and adjusted it to 6.8 (what the pet store said) then today it was WAY over again so I adjusted it again. I just checked it after 2 hours and it is over again.
What might be causing this? And how can I fix it? I'm sure the fish aren't liking it much!
I've had fish tanks before but only ever small ones, I used to check the ph once a week and it was OK most of the time. I checked it 3 days ago and adjusted it to 6.8 (what the pet store said) then today it was WAY over again so I adjusted it again. I just checked it after 2 hours and it is over again.
What might be causing this? And how can I fix it? I'm sure the fish aren't liking it much!
