rudy
Moderator
When I built my sump for my 300 gallon due to size restraints of the stand the sump was quite a bit smaller than I was used to. With the large amount of water even if there was a power outage and the power came back on the loss of water would still not be enough to effect the system. Basically said I have never thought of putting a check valve on my pumps in the case a power failure. Strangely enough it actually came up a few weeks ago and I realized the importance of a check valve as without one if your sump is drilled for a drip system you run the risk of pumping all the wAter out of your sump after a power failure (if the power was to back on). Unfortunately this is exactly what happened to me last week still short of the check valves. Essentially the pumps came on drained the sump and with a lack of water in the sump it killed my bio. Essentially i have 20,000 of fish and am cycling a tank......wish me luck. Sometimes I wonder if this hobby is worth it.
Long story short put check valves on your pump returns.
Long story short put check valves on your pump returns.