Hard water

[Illwelder]

I have a new reef and fish aquarium and my water is really hard. I used a 4 stage rodi filter system how do I fix this issue

 

[YBF_Reeftank]

Have you measured your output? More than likely your gonna have to add extra cartridges but won’t know for sure unless you have a number

 

[Spare time]

What do you mean? Also, are you talking about after the RODI? After mixing with salt?

 

[Randy Holmes-Farley Verified Community Expert]

Seawater is very hard, and should be very hard. :)

 

[Illwelder]

What do you mean? Also, are you talking about after the RODI?

Yes after the rodi will post the numbers when get home

 

[Randy Holmes-Farley Verified Community Expert]

Yes after the rodi will post the numbers when get home

I would not bother measuring hardness of RO/DI effluent. 0-1 ppm TDS water is fine no matter what a hardness test reads, and in reality it is very low.

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[YBF_Reeftank]

I would not bother measuring hardness of RO/DI effluent. 0-1 ppm TDS water is fine no matter what a hardness test reads, and in reality it is very low.

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I’d listen to Mr Randy