Yellow water

[DanishReefer]

Hello, my water Is really yellow/brown i did a 15 % water change Yesterday evening, and it was almost clear. This morning it was also clear just a bit yellow

i domt understand This, what can i do and what is it?

 

[Eagle_Steve]

Are you running any carbon? And what is the tank stocked with? Numerous things can cause yellow water. Carbon is normally used to correct this.

 

[Roush427R]

+1 on carbon.

 

[Reesj]

What they mean is using activated carbon bags. Not carbon dosing btw

 

[ScottR]

Are you using GFO? It can brown/yellow the water.

 

[Reefrugab]

Which is GFO?

Are you using GFO? It can brown/yellow the water.

 

[Billdogg]

I use carbon in a reactor 24/7/365 and have for over 30 years. It's job is to remove toxins (copper, other heavy metals, medications)and DOC's (dissolved organic compounds). The DOC's are where the yellowing of the water comes from.

Although you can use carbon in a mesh bag, it's effectiveness is greatly affected. You will be much better served using a reactor. I have both TLF150's and BRS single reactors in use. Both have their + and -.

GFO is short for Granular Ferric Oxide. It's only real purpose is the removal of excess phosphates from the water, and should only be used if (when) testing or excess algae growth demonstrates that there is a problem. Because all living organisms require some small amount of PO4, the goal is not to reach 0.00 PO4, but rater somewhere in the 0.03 range.

 

[William Robinson]

I use carbon in a reactor 24/7/365 and have for over 30 years. It's job is to remove toxins (copper, other heavy metals, medications)and DOC's (dissolved organic compounds). The DOC's are where the yellowing of the water comes from.

Although you can use carbon in a mesh bag, it's effectiveness is greatly affected. You will be much better served using a reactor. I have both TLF150's and BRS single reactors in use. Both have their + and -.

GFO is short for Granular Ferric Oxide. It's only real purpose is the removal of excess phosphates from the water, and should only be used if (when) testing or excess algae growth demonstrates that there is a problem. Because all living organisms require some small amount of PO4, the goal is not to reach 0.00 PO4, but rater somewhere in the 0.03 range.

Good Morning BillDogg,
My reply is mainly to the poster but wanted highlight the use of the carbon and element consumption/absorption of the both inhabitants and carbon combined without proper supplementation. I agree with all your facts 100%

Danish Reefer,
If you choose to use a carbon reactor on your tank which I fully think is okay. You need to monitor elements in the water as carbon will absorb these as well. I run carbon personally only when need but I also have a dosing system and only do about 3 - 4 water changes per year. Not sure of your setup but if you have corals and running carbon 24/7 without proper water changes or dosing you could potentially steal elements from the coral. Best of luck to you!