DIY Live Rock Recipes?

sambo said:
I used the same basic "five parts aggregate to one part cement, but used as aggregate..

1 part aragonite sand (Seflor Special Grade?)
1 part crushed coral
3 parts crushed oyster shell.

Crushed oyster shell's dirt cheap at most farm supply stores. Used for chicken feed supplement, or something.

We also used the "feed store" oyster shell. Never again! We have so many algea blooms and have narrowed it down to the rock leaching phosphate and organics. I have doubts that the feed is pure crushed oyster shell.
 
P.S.

Click on my gallery iron above to see our construction pics and tank. We molded our aquascape using sand bags and a plywood tank mockup. The whole interior is one big cave.
 
how did you get it in the tank with the braces still in...
did you have to take the braces out, or were the pieces able to slide in.
 
To do a project like this you really need to know exactly how you want it to look first. Lots of measurements are needed of the tank, overflow boxes etc. Plan the plumbing taking into consideration that you will need to break up the whole thing later to fit it past the braces of the tank.

First we built an EXACT 3 sided replica of our tank in plywood. We then added metal flashing exactly where our corner overflows would be (180g AGA dual corner overflows). Then we ran all our plumbing and tubing etc. and zip tied it to the plywood. We took a black marker and marked lines on the "tank bottom" of where our aquascape would be, sort of like a footprint. We noted where the cave openings etc. would be also.

Then we filled ordinary plastic bags from the store (wal-mart) with sand in many different sizes. We simply stacked them up and taped them with regular packing tape until we got what we wanted. We put the agrocrete on in stages from the bottom up. I can't remember the exact recipe but it was a just little on the dry side. We used oyster shell feed in place of the crushed coral. I wouldn't use it again. Then, let it cure just until solid and kept working our way up until it was all covered minus the cave openings. We covered the whole thing with wet heavy blankets for two days to set the cement. It is important to keep the blankets wet the whole time.

We next marked where we would need to split the aquascape. We did it in such a way that the pieces would interlock and support themselves once in the tank. Also the lines where the pieces join are in contours etc. that hide them pretty well. A hand grinder or small circular saw works good to make the cuts because you can angle the tool so that the cut is mitered. Next we cut the zip ties and took the screws out of the plywood sides. The cement comes off the plastic bags pretty well

Next we put the pieces into a 150g stock tank we got from Fleet Farm and cured it in fresh water for 3 months. It will get messy so I don't recommend curing it in the tank.

Putting the pieces in the tank wasn't very fun. I was on my back inside the tank "bench pressing" the 100lb pieces while "hubby" was lowering them from the top. We went with a plenum so the rock isn't directly on the glass. After that it was just a matter of plumbing the whole setup, assembling our overflow pipes and connecting the pump returns to the aquascape's embedded plumbing.

Next the sandbed and water were added and the pump started. We ran the tank like this for about a week just to make sure the ph wasn't going to go crazy before beginning a "fishless cycle".

In hindsight I would use egg crate against the back wall of the plywood for the cement to adhere to. It was kind of hard to get the agrocrete to mold to the vertical parts of the back.
 
sorry to bring up an old thread, but this is the thread that inspired me to try making some diy rocks for my new display, so i'll post it here. :D

i read this thread and a whole slew of other threads and info i found on this and other sites.

the recipe i ended up trying is this:

1 part quickcrete tan play sand
3 parts dark granulated pvc particles
1 part black landscaping colorado lava rock
~1.5 part quickcrete type 1 portland cement
enough water to mix everything together into a sludge

i gotta tell ya...mixing this stuff by hand MURDERS your fingers! lol

i've got everything in 5 tubs curing in the sand molds. the pieces we made are medium to large and are pretty basic in shape. this time around is a trial run...i'll try to make some interesting shapes if these turn out. i'll take pictures in about a week, hopefully. :D
 
Good luck! It's tough to have patience during the curing process. Don't expect your first rocks to be masterpieces either. Just remember, its cheap, so if needed, you can always break them into rubble and try again. It becomes kind of fun and artistic after a few batches.
 
Man, this thread has got me wanting to make some more DIYLR... even though I really have no use for it right now. :)

Maybe I'll just stockpile it for possible future use or even give some away... seems we have a new schoolmarm in our area that's looking for stuff for her class tanks.

Might be a good time to see if the old Coyote still has what takes. :smokin:
 
Some of those pictured were said to be part molded and part free-hand. Some really great looking pieces.. I've tried to duplicate some of the pieces free hand with lmited success.
 
Yeah, its difficult to replicate 3 dimensions with free hand style. Some of my favorite pieces are ones that i've built with a layered approach, but ends up being a lot of work for each piece that way
 
37702newonesrocks.jpg


These are some that I ended up letting one of my friends have. He saw them when they were curing and convinced me to let him have them. I have some more that are curing in the river right now. They are large, about 14" to 15" wide. He is put them in his 250g at the top of his artifical reef.

I also made a rock wall that is composed of 4 panels that will fit side-by-side to fit inside of our school's 55g tank. When assembled, it will cover the back wall and should make it very realistic looking. I can't wait to get it in there and covered with coralline. I'll post pics when it's finished curing in the river. I'll probably pull them out this weekend since they've already cured for 14 weeks.
 
speckled trout that is some of the best I have ever seen.. give some details on how you did it please.

that left one looks like a huge piece of real live rock.
 
I promise to give some more details and step by step pics after the weekend. I'll try to outline the process in detail. It's not really that hard. It just requires a little thinking in "reverse" or inside out. Heck ,I'll figure out how to word it later. Got to go fishing, right now. See ya'll next week.
 
those were the best I have seen....does anyone have any pics of some established tanks with DIY live rock??????? we have gotta see some soon!
 
Im excited to hear your process and ratio recipe speckled trout...how would you rate your rock in terms of pourisity on a scale of 1-10, 10 being insanely porous? How would you rate your rock in terms of strength on a scale of 1-10, 10 being like a cinder block?
 
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