600 Gallon Surger Reef Build

I decied to use the full strength 'slab mix' of concrete to patch the joints between the slabs to make the whole thing like one big piece. I did that because I didn't have much faith in those little zip ties holding the heavy pieces for very long, and I didn't want the joints to crumble and open up when the zip ties start to fall apart.
patchingjoints.jpg


Remeber this piece?
concreteliverock.jpg



Using the same recipe for the concrete live rock, I made up a big batch of the 'salty concrete' to cover over the structure to try to make it look less fake, and around the base to blend the slabs down in to the sand. I had hoped to get it to stick to the more vertical areas, but it kept crumbling off and falling to the bottom. So, the whole structure didn't get veneered in salty concrete quite like I was hoping.

concreteworkfinished.jpg

This is more or less what it'll look like until the end of time. There are some differneces in the colors of the different mixes, and the lace rock, but that should more or less be hidden once life starts growing over everything.



I also took that same 'live rock' mix and mounded it on top of anything I thought might stick up above the sand.

concretePVCcover.jpg


By the way, that's what the stuff looks before the salt has been dissolved out of it.
 
Here's a closeup of the tunnel that goes through the front of the wave break structure.
tunnel.jpg


There are numerous holes throughout the slabs, but since this thing is hollow, and I didn't want gaping holes showing the underlying PVC pipes, I added little slabs of concrete to make tunnels that critters will have to go through to gain access to the main cave.

The back of the structure is completely open. I did that to provide access for maintenance, but as it turns out, I would have to be a scuba diving contortionist to reach all the way to the front once this thing is full of water.
 
+1 on the zip ties not holding. I built a tower using them and they let go after some time with constant pressure.
 
Best build thread I've read in a real long time can't wait too see a video of the surge !! Where can I read up on these surge systems more? Very impressaive well thought out tank! I love all the energy saving systems you are incorporating ! Would love too see how much $ it costs to run compared to similar sized tanks!
 
Best build thread I've read in a real long time can't wait too see a video of the surge !! Where can I read up on these surge systems more? Very impressaive well thought out tank! I love all the energy saving systems you are incorporating ! Would love too see how much $ it costs to run compared to similar sized tanks!

If you look up the Honolulu aquarium they use this system on most of their tanks, you should get some good info/images/videos there.
 
If you look up the Honolulu aquarium they use this system on most of their tanks, you should get some good info/images/videos there.

Too true. These surgers are called Carlson Surge Devices (CSD) after Dr. Bruce Carlson who used them extensively at the Wikiki Aquaium in Honolulu.
 
In worried about the detritus that will release from the concrete aquascaping when you fill the tank. Lets hope it won't be a complete dust storm.
 
I get excited everytime you update with pics...! looking forward for some more..

Sorry to say no new pics, but as for updates...

No matter how fast I swap out the water, the pH stays off the chart. I'm guessing 9+. I did some research and it seems like vinegar is the least harmful way to drop the pH. So, I started adding vinegar to speed up the process. 1 gallon of white vinegar gets the pH down to measureable levels, but within an hour it's back over the top.

I'm going to keep swapping water, and lowering pH until it stays stable at 8ish. It looks like it'll be a while.
 
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