[clothahump]

You really should wash out test equipment straight away, and allow to dry.
Bog wood will affect Ph levels, but you would need large amounts to make a significant difference.
If you do not worry about clarity of the water you can use Shagnum moss peat from garden centres,make sure it is pure peat with no additives,fill a filter bag with it and suspend in the tank,or place it in an external filter,this will lower the Ph.
Or alternitavely use rainwater that has been filtered through carbon,do not introduce too much at once or you could give the fish Ph shock. 8)