Sump markings

[LadyTang2]

What are some ways you can mark the inside of a polyethylene sump that wont put anything bad into the water when saltwater fills above this ie if pumps go off? I would like to clearly mark the water line.

Ideas?

 

[WIReefer]

I just used a sticky note on the outside of my sump while I was setting the tank up.

 

[LadyTang2]

I just used a sticky note on the outside of my sump while I was setting the tank up.

I think being submerged in water when I do maintenance and turn off pumps will cause it to wither away. Any more permanent ideas?

 

[stanleo]

I think being submerged in water when I do maintenance and turn off pumps will cause it to wither away. Any more permanent ideas?

They sell black black silicone for tanks. use that to make the line.

 

[magicwhistle]

I think being submerged in water when I do maintenance and turn off pumps will cause it to wither away. Any more permanent ideas?

The outside of your sump is submerged in water?

 

[bevo5]

The idea would be to put it on the outside so it's not submerged. I use brightly colored electrical tape on the outside.

You could just get a plastic rod and notch it, if you want to put something in the sump?

 

[Flippers4pups]

You can use a permanent marker to mark the waterline. No chemical reaction with the saltwater will happen. Remove some water from the sump, dry the area and mark it. Done.

 

[Flippers4pups]

You can use a permanent marker to mark the waterline. No chemical reaction with the saltwater will happen. Remove some water from the sump, dry the area and mark it. Let it dry for a few minutes. Done.

On clear sumps, same or use tape, a label maker.....etc.

 

[Trivan]

I used painters tape on the outside

 

[LadyTang2]

The outside of your sump is submerged in water?

My sump is not clear therefore I cannot put on outside. I said "inside" in my original post.

 

[Flippers4pups]

My sump is not clear therefore I cannot put on outside. I said "inside" in my original post.

Permanent marker such as a "sharpie" will work. I have water level increments marked in the inside of my brute water mixing containers now for years. No issues.

You could make a vertical external water level tube. It would require drilling the sump for small bulkheads. Once the sump has the inside threaded bulkheads installed, using threaded 90 degree barbed fittings for each bulkheads and attaching a length of clear vinyl tubing between them. This way the water level would be visible from the outside of the sump.

I've done this before and it works very well.

 

[LadyTang2]

Permanent marker such as a "sharpie" will work. I have water level increments marked in the inside of my brute water mixing containers now for years. No issues.

You could make a vertical external water level tube. It would require drilling the sump for small bulkheads. Once the sump has the inside threaded bulkheads installed, using threaded 90 degree barbed fittings for each bulkheads and attaching a length of clear vinyl tubing between them. This way the water level would be visible from the outside of the sump.

I've done this before and it works very well.

Cool idea, do you happen to have any pictures of your old set up with this external tube?

 

[Flippers4pups]

Cool idea, do you happen to have any pictures of your old set up with this external tube?

No, unfortunately. last time I did something like this was for a ATO top off reservoir made from a salt bucket I do have a picture of that!