I received the shipment of Level Loc auto top off units from GAP Products. The first thing I noticed is the quality construction. The Level Loc is not a flimsy unit like some on the market. It is built to last. There is little in the way of automated construction with this custom unit. Each one is literally hand made. The owner's of GAP Products are to be commended on designing what appears to be a well thought out, sturdy, precise instrument.
The Level Loc has two methods of water shut-off. The first is the float valve. As a back up, in case the float valve gets stuck, a low voltage solenoid valve will shut the unit off to avoid flooding.
It installs in just minutes (no tools necessary), easily adjustable to meet your required water level, and can be used with an RO/DI unit or gravity feed.
It's not cheap, MSRP is $99.95 plus $8 shipping but, quality never is. You can get yours from
The Cultured Reef at Internet Direct Pricing for $96.95 with free shipping, click
Level Loc Auto Top Off
I need to "clean up" the sump area before I can install my Level Loc on the 135 system.
Dick