If you are still interested in doing a pond and might think about doing a rock pond try this forum
http://www.fnzas.org.nz/fishroom/synthe ... 17921.html
Try this forum. Also the cement dye is generaly acidic so it would definitely change the PH level of your tank
http://www.fnzas.org.nz/fishroom/synthe ... 17921.html
Hi, you could try using a combination of real and synthetic rocks. go to this forum to see how the synthetic rocks are done.
http://www.fnzas.org.nz/fishroom/synthe ... 17921.html