I've had both an eshopps overflow and the cpr one. I have to say I like the CPR one a million times more. I have yet to have any accidents with it, and I have a backup aqualifter pump and a rebuild kit just in case.
When my power goes out like it did twice yesterday, lol, it just stops the siphon. As soon as the power comes back on it kicks in and starts the siphon again.
I had zero luck with the eshopps keeping siphon on both tubes and got tired of sucking up salt water to start the siphon. :-(
Just my two censts!
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.