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New Reefer
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308 Posts
Discussion Starter #1
I was thinking about making a 10 gal sump for my 55gal reef tank!

Here is what my problem is;
My tank is already started and is 6 months old!

I really want to make a sump and take the stuff out of the tank.
Ex. Skimmer, heater!
Is it possible to make a sump without cutting holes in the main tank?

If it is, what all do i need to get started?

I am really new at this and i really want to do this!
I already have a 10gal spare tank! Or is a 10gal too small? i can do a 15 gal!

Any suggestions?? Thanks!
 

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Premium Member
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2,769 Posts
You will run out of room really fast in a 10G...but it can be done...you'll need to find a good quality overflow box as using a sump on a non-drilled tank brings with it the risk of a flood because overflow boxes rely on a siphon to make them work...loose the siphon and you'll likely overfill the display tank...when people get to the "sump phase" in the hobby I usually tell them it's time to watch Craigs List for a used 75 or 90 because those are not a much bigger footprint than a 55 and you can find them reef ready (aka already drilled) or most of them can be drilled on the back glass...most 55's are all tempered glass and can not be drilled, but 75 & 90 are generally only tempered on the bottom glass...in long run if you sell of your 55, the cost to upgrade to the next size tank is probably about a wash with a good overflow box setup.
 

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Administrator
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46,647 Posts
I like a 20 long as a sump, minimum, I used a 20L 0n my original 29 g. later I used my low wide55 as sump for the 75g when it went up.
 

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316 Posts
i used a 20L for the sump on my 55 and 2 years later i wish i had room for a 29 under the stand, so for sure no smaller then a 20 L
 

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Registered
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1,921 Posts
im using a 20g long, and i gotta admit it is pretty tight but i didnt have a choice. my stand was already pushing it. check out some pics on peoples build threads that have sumps
 

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Making Waves
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207 Posts
My 20L has been set up since May. Last night I drilled it for a sump and Im using a 10 Gal. I drained the tank 3 inches, dried the inside, duct taped a plastic covering in place on the inside and drilled from the outside, stopping every 15 or so seconds to wet the glass-cutting bit. I hooked up the drain line, filled the tank back up and had no problems.

It's quite possible to drill your tank without tearing things down, but you have to be pretty carefull. Its also possible to use a 10 gallon tank as a sump, however I'm not running a skimmer, and it would be advisable to manage the "floorplan" of your sump. I'm using a HOB filter with the media removed as a holding 'fuge for some macro. My sump houses my overflow line, a heater, the HOB filter-fuge, and a return pump and I have quite a bit of room to spare for rubble-rock "fill".

-Matt
 

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300 Gallon Reef Tank
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2,097 Posts
I just built a sump/ fuge and I agree with the 10 gallon being a little small. You won't believe how fast you run out of room if not immediately then over time after other things are added. I would consider the 20 L.
 

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Premium Member
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5,051 Posts
I used a 10 gallon for a sump before, but a 20 gallon would be better. use an overflow as described above to avoid drilling the tank. if you can, though, I would drill the tank.
 

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50G,RO,HOB Skim, PhosRctr
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98 Posts
Ok...I am thinking about using a 10G as well for my 46G, because it is the only one that will fit under my tank. My stand unfortunately only has a small middle area for such. Is there somewhere here or another link with step by step instructions....sorry if this has been asked before but I am having trouble finding a good step by step instruction for such a build. thanks!
 
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