What Pharaoh is telling you is very true. That low of a flow greatly increases your chances of the siphon breaking on that overflow.
If you can't bump up the flow gph now then you need to hook the check valve on the top U to the venturi of a power head to continually pull the air out of that top U.
Those hardwood floors will hate you if the tank overflows. And with the low flow that is a great possiblity.
If you can't bump up the flow gph now then you need to hook the check valve on the top U to the venturi of a power head to continually pull the air out of that top U.
Those hardwood floors will hate you if the tank overflows. And with the low flow that is a great possiblity.