Element X starts at 100ppm (1 Viewer)

[Reefahholic]

Who can answer that’s relying solely on water changes for element replenishment?

Element X starts @ 100 ppm

Your 100/G system is growing rapidly and consuming 10 ppm of Element X each week. We have already tested our salt-mix and confirmed that Element X is present in the salt. We found the concentration at 100 ppm. Element X was initially at 100 ppm, but now has dropped to 90 ppm. You rely solely upon water changes for supplementation of all elements.

What % of water needs to be changed to replenish Element X back to 100% or 100 ppm?

 

[Team Turtle]

I would venture to think that if it is depleted by 10% than only a 10% water change would be needed if x is at 100 in your salt mix.

 

[Reefahholic]

I would venture to think that if it is depleted by 10% than only a 10% water change would be needed if x is at 100 in your salt mix.

Good guess, but try again.

 

[soymilk]

100%

 

[BigRick]

X2 100%

 

[Erin]

I would venture to think that if it is depleted by 10% than only a 10% water change would be needed if x is at 100 in your salt mix.

This would result in 91ppm of element x.
(90 gallons of 90ppm + 10 gallons of 100ppm) ÷ (100 gallons)= 91ppm.

Relying solely on water changes, you'd have to replace 100% of the water (at one time) to return element x to 100ppm.

 

[Reefahholic]

Haha! You got it. Or you saw one of my threads. Lol.

Wait, so mean you to tell all these water change folks that a 10% water change weekly will only increase Element X by 1%. Oh boy… we have a problem here!

 

[Reefahholic]

100%

Nice job!

 

[Reefahholic]

X2 100%

You in our group! Haha