Where To Buy Rocks

[festo]

Hi
i have been looking at buying rocks for the fishtank,
texas holy rock
spaghetti rock
lava rock
does anyone know where i could buy these in the w-midlands uk,
also are these rocks likely to alter water conditions too much,
it will be freshwater,also any ideas on alternative rocks,
a white or light coloured rock is what i want as will be having black sand substrate,
thanks

 

[OldMan47]

I have no idea about specific stores in your area. In general, many rocks can be found in garden supply centers for use as landscaping materials and will be much cheaper there than in a fish shop.
The Texas holy rock is definitely going to affect the water. It is used by people who want especially hard water with a high pH, like people keeping African rift lake fish.