3 Tier Frag Rack System w/ LEDs

MH_Courtney

Reefing newb
We decided that we needed more space that just a few frag racks in our 265 display. We really like the 2'x4'x8" rimless tanks so we decided to set up a system based off that size tank. We debated about purchasing the glass tanks from Glasscages or building our own acrylic tanks. We decided after crunching the numbers that it would be better to go with the glass tanks instead of building the acrylic ones. Building the tanks would have definitely been a fun project and I am sure we will be building some acrylic tanks in the future.

We had a very small space to work with where we wanted to fit the frag tanks so we decided to go much more unconventional and build vertically. Instead of fitting 1 tank in the space we managed to squeeze in 3. The tanks are stacked on top of each other and are all plumbed together and are sumpless. There is no skimmer or any filtration on the tanks, we will be relying on daily water changes to maintain the water quality. 10 gallon water changes a day should be enough to keep the water parameters stable and weekly siphoning for any detritus. Time will tell if the system will work like this or if it will need to tweaked some. At the moment the bottom tank has about 75 lbs of live rock in it that we got in a trade so that should also help with the filtration for the time being. We do not plan on putting any fish in this system so I think just the water changes will be enough.

Currently the middle tank is the only one that is completely setup. It has a Vortech MP20 on the opposite side from the return, black eggcrate for the frags and 3 12"x8" heatsinks with 12 LEDs each for a total of 36: 18 Cree Blues and 18 Rebel Luxeon whites. These LEDs are not dimmable like our display but are the same LEDs. We currently have 60 degree optics on just the blues.

We do a 10 gallon water change on our 265 gallon everyday and now instead of putting that water into the toilet I will be putting that water into this system and draining 10 from this system into the drain. I lightly dose the 265 so that should be enough for the frags in this system and will just increase the dosing in the 265 as needed. The tanks are not physically plumbed together but they share the same water, fun concept isn't it :) This way we get all the benefits of a single large system but are able to isolate one or the other if need be. I have a retractable garden hose that reaches the sump of the 265 and drains into the bottom frag tank.

Last night I put the first frag in the tank, an ORA Green Digitata. I want to let that one sit for a few days just to make sure everything looks ok before I move everything else over. As of last night and this morning it had great polyp extension and was looking almost better than it was on the rack in the display. If everything goes well then by the end of the week I will have all the other frags moved over.

As you can see from the pictures this system is located in my former laundry room (which is on the backside of my powder room). The washer is upstairs now and that spot was begging for something fish related and with the washer drain right behind the tank it is a pretty perfect spot. I don't have any build pictures but as you can see from the pictures it is basically 2x4's framed together. Each tank is sitting on a 1" sheet of styrofoam. Because of the tight space I was having a hard time getting the entire system in the picture. Excuse the messy wires on the wall, I took the pictures before I finished wire tying them all out of the way. The plumbing isn't very easy to see from the pictures but the pump is located on the left bottom and pumps up to the top tank. It drains on the right side from the top tank into the right side of the middle tank. The middle tank then drains on the left side to the left side of the bottom tank where it is then pumped back up to the top tank.

Here is the full system
P3070097.jpg


Middle Tank
P3070100.jpg


Middle and Top tank
P3070101.jpg


Middle and Bottom Tank
P3070102.jpg


Closer shot of LEDs
P3070103.jpg


The heat sinks are strung on steel rope so I can slide them around if I need to get more or less light somewhere. I also have quick disconnects on my drivers so that I can troubleshoot individual drivers or arrays if need be.
 
That is a pretty cool setup! I would think long term, you probably ought to put the LR in the top tank since LR will require the least maintenance, and that tank is the hardest to reach.
 
That is a pretty cool setup! I would think long term, you probably ought to put the LR in the top tank since LR will require the least maintenance, and that tank is the hardest to reach.

It probably will get shuffled up there eventually since I am sure that is the last tank I will fill with corals. I am hoping to have some broodstock tanks set up before I run out of room for the rock because that is most likely where that rock will go. I have a pair of gold stripe maroons that are spawning as well as a pair of yellow assessors that are spawning.
 
I plan to do something similar for a display tank if i'm going to get up and running, i think that I will have my optics just touching the surface of the water though as apparently the light that actually make it to the corals, inverts, fish or whatever is far greater as none of it is lost trying to penetrate the surface of the water. Do you think this will work or do the optics get to hot?
 
And what happens if some water happens to get into the fixture over time? You could zap your whole tank, or worse, burn down your house. I would keep the lights out of the water. ;)
 
How about if I made sure the leds were watertight with silicon or something? And the only other thing is the heat sinks which are aluminium so no probs there.
I know its a lot of effort, but i think it would really increase the brightness in the tank. ANd i wont put the actual leds underwater just the tips of the optics...
And thanks for the fast replys guys much appreciated :)
 
You know what's really full of win? Being able to take a crap while checking out frag growth!!!! :bounce: :^: :Cheers: So awesome.
 
Haha @d2mini i was thinking the same thing...
And bifferwine thanks for the advice, the little pyro voice in me wants to do it :P haha
 
Looks like a pretty nice system

Kind of off topic, but @ cjflis: I dont know why you'd want the LED's to touch the water. If you use LED's with opics, you'll have no problem getting the light into the tank. There are several people using AI fixtures that can't even run them at full power because it would melt thier corals.....keep the fixtures out of the water where they belong
 
I agree, led's give off great light and with good penetration. I have my led's fastened to the ceiling, which is approx 3ft from the water surface, and my corals couldn't be happier.
 
Is there an update for this build? Curious on how things are coming along. Did you decide to put the LR on the top tier? I like the LR on the bottom strictly because of the extra weight. Just my opinion. Would like to see some new pics if possible :)
 
Back
Top