Swahala Driftwood

Since we have been on the subject of wood lately, does anybody
know anything about Swahala(Exotic African Driftwood).  I just
bought some at a local pet store and put it into my plant
tank.  My PH had been holding steady at 7.0 (CO2 injection)
but has gone up to 7.6.  I,m not sure the wood did it but I
can't think of any other changes I have made.

Thanks Again- Paul in Ohio