500 Gallon Outdoor Tank build

cymaster007

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Here is the documentation from my 500g outdoor tank build- enjoy!

MANY MANY MANY THANKS TO STEVE GARRETT for helping me out with the planning of this.

This tank was started in 8/2010- started as a soft coral tank, and over the year I noticed a large die off/withering away of the softies and the SPS took off. Ive slowly switched over to SPS as the majority of the coral outside.

The tank started off with no fish, and I noticed the pods were getting aggressive so I dropped in 2 dragonettes they are now fat and happy. Recent additions have been a 12line wrasse and a foxface rabbit fish-
I do not feed the tank as all of the macro algae growing and pods feed the fish outside.

Tank Size is 48x72x16 w/ 4 chambers
Skimmer is ASM G6 and return pump is Reeflo Marlin.
All electric equipment is inside a costco shed, nothing electronic is outdoors except for the cooling fans in the summer. Almost all of my equipment was purchased used (saved tons of $)

I have the sump (tomato bin) and other plumbing completed and insulated. Temperature swings range from 76 degrees in the winter to 82 in the summer. I get monthly water deliveries of salt water into a 550g poly tank. Water changes involve opening the ball valve by a pool drain and draining the sump. A reeflo snapper gets hooked up to my water tank and pumped back into the sump...super easy.

Top off is in a 55g barrel, w/ a 5 stage ro/di unit- waste water gets dumped into the pool (great pool refill in the summer). A float switch in the skimmer barrel pumps water into the sump when the level gets low.

My current draw on the kill-a-watt meter with skimmers and everything running was approx 250 watts (without the heaters on). For heating and cooling I am using a Ranco dual stage controller running 2 carpet fans, I have hooked up a 1hp chiller in line for emergency purposes and the heating is (6) different 300watt heaters set at different temperatures so it the temperature gets really low one will turn on, and then another, and then the last set. I was not able to get a gas heating system out to that area of the backyard.

The Lux Meter is reading 1200-1300 (x100) under full sun and 300-400(x100) lux under the Polygal Polycoolite light lens.
Stand is made of Treated lumber and aluminum tubing.















 

cymaster007

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The first coral I tossed in was a GSP- on 8/7/2010. It did well so I filled the tank with softies. The majority of the softies withered over the year, this is what some of the colonies looked like when I put them into the tank.










A recent photo of some of the colonies.



http://i63.photobucket.com/albums/h139/Cymaster007/Outdoor Reeftank/IMG_0220.jpg

My die-off/Survival rate has pretty much averaged out as such over the past year-
Zoas- all different colors/types 90% death rate
LPS- Chalices, favia etc. 70% Death rate
SPS- Browned out except for mostly purple/pinks. 20% Death Rate
Softies-Xenia/Anemones/Rics etc.- 30% Death Rate

Could be many factors- I have not done any mitigation, just consistent water changes; SPS seems to have done the best so I have started to try more SPS variety.
 

cymaster007

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I have never tested the water params, as I have not added any dosing equipment or other items. Just a very dedicated water change regiment.

Heres is the SPS growth progress.




 

cymaster007

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And I finally took a 14k light outside because over the past year, I could have sworn everything was brown.... to my surprise, there was alot of color to be seen!








 

cymaster007

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If you guys have questions comments, dont hesistate! I dont mind helping other out with where to find materials if you want to try something similar to this-
Thanks!
 
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Build is really great. I am sure just seeing everything develop was very interesting. What is your plan for a gas heater. Most of my equipment is outside and this time of year my heaters are on repeatedly.
 

cymaster007

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Build is really great. I am sure just seeing everything develop was very interesting. What is your plan for a gas heater. Most of my equipment is outside and this time of year my heaters are on repeatedly.
The gas heater would heat a water line coil in the sump. I opted to just stick with drop-in heaters, and like yours they are on pretty consistently in the winter. The insulation really helps alot though.
 

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