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Discussion Starter · #1 ·
<img src="http://www.thereeftank.com/gallery/files/3/8/2/6/8/2011_05_21_05_59_37_321.jpg" alt="Sump/refugium Plans" />
(The 3 lines in between the refugium and skimmer is the baffles)

I am planning to build a Sump/Refugium out of a 5 gallon tank. It will be set up side by side with my 20 Gallon L display tank. I already know that a small sump won't really make a difference but the purpose I am trying to get out of it is mainly somewhere I can put my skimmer, heater, and some LR from the display that I want to take out. Plus hopefully less micro bubbles from the skimmer.

I will be using a U tubing for the Display tank flow and a return pump in the refugium to help transport some pods in the fuge.

Does this plan seem to be able to work out?
 

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Gray Whale
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I'd say you've got the right Idea...

Because you are using such a small "container" for the sump/skimmer setup, I would suggest using a Bare Bottom setup with the use of Porous Live Rock and your chaeto... The use of a 4" DSB might not be very beneficial for the size of the sump... You would only have 5" inches of water in your sump at a Max... That's about 1.5 gallons... I know you said you're not too worried about using it specifically as a sump, but the amount of evaporation from the sump per day wouldn't leave you with very much "settling" room. The use of a BB setup would allow 2.8 gallons of water... A 1.3 gallon increase in total water volume!

You could probably save some room by only using two baffles if you are preferring to use this style system instead of a grooved baffle. And, just noticing in the drawing. the baffles are from top to bottom... I'm sure that was just a mistake ;) You would want the Right baffle to be at least 1" above the Bottom and the Left baffle you would want about 1.5" from the Top, this extra half inch will allow for flow Over the baffle without reaching the top of the tank.

I know you're trying to cut down on bubbles... Maybe you could use a filter sock to help out too...
 

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Rock guy
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will the sump surface be lower than the dt surface? i would assume it is to get the u tube to get water into it from the dt. the only concern i see is if the return pump fails you will pull a lot of water to the sump, and depending on hight of the tank/baffles it could overflow other than that i like the idea
 

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Discussion Starter · #5 ·
I'd say you've got the right Idea...

Because you are using such a small "container" for the sump/skimmer setup, I would suggest using a Bare Bottom setup with the use of Porous Live Rock and your chaeto... The use of a 4" DSB might not be very beneficial for the size of the sump... You would only have 5" inches of water in your sump at a Max... That's about 1.5 gallons... I know you said you're not too worried about using it specifically as a sump, but the amount of evaporation from the sump per day wouldn't leave you with very much "settling" room. The use of a BB setup would allow 2.8 gallons of water... A 1.3 gallon increase in total water volume!

You could probably save some room by only using two baffles if you are preferring to use this style system instead of a grooved baffle. And, just noticing in the drawing. the baffles are from top to bottom... I'm sure that was just a mistake ;) You would want the Right baffle to be at least 1" above the Bottom and the Left baffle you would want about 1.5" from the Top, this extra half inch will allow for flow Over the baffle without reaching the top of the tank.

I know you're trying to cut down on bubbles... Maybe you could use a filter sock to help out too...
Great suggestions! Maybe I might just use a 1'' sand bed and lots of rubble instead as I still want some sand for the critters. Good point in the water volume. Hopefully moving some of the LR from the display to the fuge/sump will allow more water volume overall too.

As for the possible flood if power or flow stoppage, I plan on having the return pump high up so if the gravity pull stops, the pump will stop when the water level reaches a certain point. Also, I am planning to drill a hole in the U pipe on the Display tank side below the water level (probably about 1/2 inch below the water surface) in case of the pump/power outage fail happens so once the gravity pulls the water to a certain pipe it will stop due to the hole in the pipe stopping the siphon. Do this sound like it will work regarding the failure of the pump/gravity pull?
 

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Discussion Starter · #6 ·
will the sump surface be lower than the dt surface?
Oh yea, i forgot to address this. The sump surface will be at approximately 8 1/2 - 9 inches high, while the display tank is about 11 inches high which will allow for a subtle pull.
 

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Rock guy
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with the surface at that hight it will be a very slow but the good thing is if you have 2 1/2 - 2'' above the surface to the rim you actually will not overflow if the return fails, your dt will just lower till the 2 surfaces are equal, kinda makes it almost fool proof (almost)
and you might not need that hole drilled in the u tube so the siphon wont break in a power outage
 

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I appears that you only have 1 inch left at the top of your water level in the sump. If you have a power outage, your sump will over flow onto the floor. you need to make sure that you have enough room on top of your normal operating range to handle all the water that your display tank is going to dump into it while the return pump is not running. Also make sure you have your skimmer in hand before putting the baffles in. Your skimmer area looks kinda small.
 
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