How do i change the ph in my Tank

[dragonbud]

i have a 45 ltr tank the water in my tank is near 7.0 ph.
my question is should i renew all the water or can i add the ph down to the tank.
thanks for any advise.:rastasmoke:

dragonbud Reviewed by dragonbud on 05-26-2008. How do i change the ph in my Tank i have a 45 ltr tank the water in my tank is near 7.0 ph. my question is should i renew all the water or can i add the ph down to the tank. thanks for any advise.:rastasmoke: Rating: 5