Originally Posted by Reefing Madness
Er, or until it fails. A Reef Ready (RR Tank) is the only tank I would advise anyone new to go ahead and use a sump. As the tank is drilled and an overflow using that system is very, very rare. Using the overflow box system on the other hand, welp, thats a different story. Difficult to run, absolutely not, I agree. To many ifs and what happens, if you ask me. I don't want 240g of water all over my living room, if or when that went down, thats is why I don't run one.
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I hear you Reef, but i think the actual risk of overflow is almost nill. You would be far more likely to drop a live rock and break your glass, causing a spill, than to have a reliable overflow system spill.
The CPR product line, for example, is extremely reliable. CPR Overflow Boxes