hey everyone, i'm back from a really long story, but the short version is that i made my rock, portland cement, and blue bag rock salt from home depot, formed it, and have been cureing it in fresh water for i think like 2+ months now.
The system i used was a battery operated sprinkler timer. every noon, 6pm, midnight, and 6am, the water was turned on for 5 min and changed the water in the rubbermade tub my rock was cureing in.
now, the rock has a white salty looking crud on the surface, i've tried to scrub it off with a brush, but some of it is just stuck on there too good. Sunday, i moved from fresh water to my old salt water from my regular tank changes.. i havent taken any measurements yet, but i'm guessing i'll start measuring stuff in the salt cure bath starting later this week.
i made a couple different peices, one is a cave, that was formed by using a plastic cup and pouring the wet cement/salt mix over, one is just a lump that i passed some plastic tubing through, and then pulled out before starting the water cure, one that is a bridge, that was formed by pouring the cement mix over a 2x4 that was covered with wax paper, and the last one, which is my fav, i did in a box using salt as the form, and made one that reminds me of a brain coral... the surface looks a lot like eddie's pics above...
now that thier out of the fresh cure stage, i'll try and get some pics...
one thing that i have noticed is that there are allways wee tiny little flakes breaking off here and there.. i really dont care about that other than i'm afraid that it might be exposing something that could hurt my tank or something like that. The main body of the rock isnt gonna break i dont think, so i'm really not worried about that...
ideas? thoughts? suggestions?