To maximize the space in the stand pretty much the only option is a custom built sump. I have seen a few people use the CPR CR500 wet/dry (w/bio media removed) as a sump and it seemed to work out for them.
My Oceanic 30 cube, on Oceanic's stand, uses a CPR overflow to a standard 5 gallon tank... The tank houses a mag7, a CPR SR2 Skimmer , and two 50 watt heaters... There's even enough room for Cheato and water
I keep the 5g tank about half full... With this set-up the sump doesn't overflow during power failures, and the tank is able to hold the sump's contents in case the CPR overflow loses siphon.
Here is a pic of my set up. The sump is 20.5L x 18.5D x 15H. There is a 10g refugium in the back and euro reef es5-2 in the front section. It also has 10 inches high baffles in order to maximize water volume in the skimmer section. The sump can hold a total of 25g when filled but only uses 17g when in use.
Thanks Matt. I ended up just building it myself because of the money I would save. So Cal Creations quoted me like $350 plus shipping which was way out of price range. It cost me $125 to build which was a huge difference in cost.
There are also a few other oceanic 30g on Nanoreef.com that you could check out. Navyavatar and Oggie also have great cubes...
Try acrylicsumps.com. I've exchanged a couple of emails with him. He seems to have a good rep and has done several Oceanic 30g sumps, many of which are posted on at the link.
I should have drilled my 30g but didn't want to deal with the hassle. Do you plan on drilling it now that it's set up or just an external overflow?
so how hard would it be to build and external overflow for it? I have one that I got a rediculous deal on and have been contimplating over this for some time! I want to do an external overflow and drill it for a closed loop as well but i had no clue that only the bottoms were tempered! so I guess I could take it to a glass shop and see what they would charge for all the drilling!?!?
I ordered a diamond bit from Ebay ~$6. I had never drilled a tank and was extrememly nervous but it was really easy. I bought a overflow box from FCA ~$60 and am running an external dorso. I built my own stand to accomodate some of the stuff I wanted to do. Here are a few pics.
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