NURCE - Auto Water Top Up!!!!

[Norvin Ng]

Saw this product on the web but they indicated that they have stopped production for some unstated reason.

No pumps etc needed! Just a box and some tubing!!! Works on a siphon principle, it says. And always replaces only what is lost through evaporation!

If it works, anyone out there able to understand the theory behind and maybe build one to try. I am still trying to figure it out.

Web Link- http://www.aqualan.com/products.html

[Achilles Tang]

This is actually very simple to DIY.

It's simple and effective.

[Norvin Ng]

Just added a pic of it. Anyone want to get together and DIY together?

[onghm]

Hi Norvin,

Concept wise, should be very similar to this right ?

http://mailer.fsu.edu/~lleclair/watertop.htm ?

[Norvin Ng]

Yeap. But still trying to figure out the "principle".... you know.... its the principle that counts.... All must be shouting "corny!!!!" Buay Tah Han!!!!

Seriously... Do we place the air intake portion just on the water line in the tank/sump and when the water line goes below, water somehow (THE PRINCIPLE) will flow through the other tube into the tank/sump to balance the water line again?

[onghm]

Do we place the air intake portion just on the water line in the tank/sump and when the water line goes below, water somehow (THE PRINCIPLE) will flow through the other tube into the tank/sump to balance the water line again?

If my understanding is correct......

1) When intake portion just on water line, air cannot go into intake.

Therefore the topup container is basically air-tight.

No water will flow out of siphon

2) When water line is below intake portion, air get sucks into intake.

Air travel via intake into topup container.

Volume of air displace water.

Water starts to siphon out to sump via gravity

(Topup container must be higher than sump)

3) Once sump water line above intake portion, back to (1)

My 2 cents

[Ian]

If my understanding is correct......

1) When intake portion just on water line, air cannot go into intake.

Therefore the topup container is basically air-tight.

No water will flow out of siphon

2) When water line is below intake portion, air get sucks into intake.

Air travel via intake into topup container.

Volume of air displace water.

Water starts to siphon out to sump via gravity

(Topup container must be higher than sump)

3) Once sump water line above intake portion, back to (1)

My 2 cents

Onghm 100% right!!! Save me from explaining.

[alvy]

It is a simple concept..just make sure the top up is higher than the water level in the sump..else saltwater will flow back into the topup reservoir..very easy project indeed..anyone interested??hehe..

[Achilles Tang]

How much is the Alvy-Nurse?

*suck suck suck*

[spade]

may be a pic will help

the whole doc is here

Edited February 18, 2003 by spade

[alvy]

AT: comeon, this is an easy project..you dun need me to make rite...but if u r interested, depending on size...anything between 80-100!!heheehe...using 6mm acrylic..