This item is suitable for any tank with a 6" coarse thread top filling cap.
The Float Gauge simply screws into the top of the cap and is available in 7 sizes to suit the depth of your tank (choose the size you require from the drop down box)
Float Gauges can be fiddly to fit, often needing holes to be drilled in the tank and back nuts to be attached (if you can get your hand inside to do so!). Also drilling can cause particle contamination in the tank. Drill the wrong hole in the wrong place and you have got a problem.
With this item all you have to do is remove your existing Top Fill Cap and replace it with this one. The float gauge then simply screws int the top. Nothing could be simpler, a few seconds and you are up and running.
There is a strong 8 centimeter column on top of the cap which makes it easier to read the gauge as you get closer to the tank.