Some simple idea I got...
Materials you need:
4 transparent tubes (acryllic/glass)
Waterhose that will fit to the tubes
1 piece of 4-way distributor
1 piece of 3-way distributor (optional)
Mount the 4 transparent tubes in a vertical position at each corner to your base and interconnect them with hoses, with help of the 4-way distributor. Now fill water into the "system" and at point you will see the water raise in all of the tubes. You can be absolutely sure that the waterlevel in the tubes are in perfect level with each other (thank you nature). As you may already have guessed, the goal is to make the top of the base corners, level to the water in the tubes.
The 3-way distributor may be inserted to the system, making it easier to let water in and out.
Brian |