JamesF;4744188; said:One piece of plant or a scrap of driftwood and the valve will not close enough to seal. If that is your only way to ensure your sump doesn't overflow, you're screwed. It best to setup the sump properly from the start and avoid check valves all together.
The tank is set up properly, No issues at all for the 100 or so times Ive shut off my pumps, or had my pumps shut off. Why would you have pieces of driftwood floating around your tank??? If a pump shuts off, the valve closes immediately due weight of the water pushing backwards on the check valve, so absolutely no water from the tank itself gets in the return lines. Unless you have driftwood in your sump, there is no way this is an issue. Thanks for your opinion, but your wrong.
AOmonsta;4744193; said:But are check valves only for pvc? This tank has tubing connecting the tank to the sump.
Nope. Mine are for vinyl tubing. They work great, are cheap, and due to their other uses, are easy to get. Just make sure you get ones that wont restrict your water flow too much, and you'll be good.
If your sump has no mechanical filtration whatsoever, then its an issue. But if that's the case, YOUR sump is set up wrong. Seriously, explain how wood can get in the return lines through the sump. I'm waiting.