I just bought a 75 gallon undrilled tank and am going to have it drilled. Is a durso standpipe setup the best way to go? I am assuming that if you lost power or a pump died, you would only send about an inch or two of the tank water to the sump. Is that correct? It also seems like it would be alot quieter since the drain is actually underwater, so you wont have any gurgling or any other noise. My LFS
will drill the bottom of the tank and install bulkheads and linelock nozzles for $220. I will just have to build the standpipe and return tubes. Those just consist of a couple pieces of PVC
and a couple of elbows. I think this is better than drilling the back or using a HOB
overflow. Am I wrong???