#ed_op#DIV#ed_cl#Some rock that I have heard is good for swa is Texas Holey rock. It is typically used on cichlid tank since it acts like a buffer for the ph. Doesnt raise it too much, but it is as expansive as ****. Looks great though. Very porous lime stone as well. Look into it if your interested.#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl##ed_op#/DIV#ed_cl#