How to automatic mixing water

[golf nut]

I'm getting intrigued.

If I poured a gallon of ro/di water into a bucket containing 4 gallons of salt crystals then I anticipate that the solution would saturate then become stable, if I removed a known amount of that solution with a double acting cylinder and mixed it with ro/di in the correct proportions I should have a proper mix to be able to inject into the aquarium, if I then replace the saturated solution that I removed with more ro/di and at the same time remove the total mixed solution from the display tank and then repeated the process I should have a fairly accurate way of doing a water change , correct?

[sphelps]

Correct, so when will the prototype be ready?

[golf nut]

Originally Posted by sphelps

Correct, so when will the prototype be ready?

I am installing a swamp sump, hopefully soon.

When you mixed a saturated solution with excess salt always visible was the SG very constant? roughly what percentage of RO/DI did you add to get you to required levels?

[sphelps]

Originally Posted by golf nut

I am installing a swamp sump, hopefully soon.

When you mixed a saturated solution with excess salt always visible was the SG very constant? roughly what percentage of RO/DI did you add to get you to required levels?

If temperature remains the same then the saturation level remains constant meaning a constant SG as well, should be about 1.200 at room temp.

Saturated saltwater has a density of approximately 1.2g/ml at 21 degrees which is around 265ppt. Lets say you have 1L of saturated solution and your target is 35ppt. This means you'll need about 6.5L of fresh water to be added. So for every 1L of saturated salt, add 6.5L of fresh water.

[golf nut]

I think its time to do some testing with a 4 head peristaltic pump.