Quote:
Originally posted by Randall_James
Then all you did was move the drain hole up from the original posistion, I do not see any advantage to the change. The nice part about the lower drain hole is that you technically have a full time water change going on (small amounts a lot of times) and from what I have read, this is more desireable than larger infrequent changes.
I change 34g of my 100G system weekly and 20 per week on my 24g nano. My 125 gets about 15 (fo), I wish I had a floor drain 
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Advantages: If power outage occurs, pipes drain to sump and water is contained there because the drain hole is just above this level. When power comes back on, typically when I am not around, the water will still be there, not down the drain. Return pump will resume its job, I hope.
Disadvantage: I must be there to conduct water changes, unless I put both the return pump and the WC pump on day/night timers to turn one off while the other is running.
I'm going to look into the solenoid thing, though.