Water Change Question

tcook1034 · 02-28-2007, 03:05 AM

Saltwater tank - Water Change Question?

I have a 250g Reef tank, Nitrite 10/Nitrate 0/PH 8.4 (Thanks to Live Rock). I do a 15g-30g water change once or twice a month mainly for supplements. I use RO/DI water and Reef Crystals for the water changes. RO meter is showing 003ppm

The day after the water change, my substrate gets full of brown/green algae. Has anyone experienced this, or know what may be causing it?

Algae disapears after avout 3-5 days, most likely from the golbies.

**Ninong** · 02-28-2007, 03:13 AM

Hi tcook1034,

You can't possibly have 10 ppm Nitrite. Did you mean to say 10 ppm Nitrate?

You may have a phosphate problem. Possibly even a phosphate and silicate problem. Whether R.O./D.I. units can completely remove phosphate always provides for interesting discussions.

What you could try the next time you get ready to do a water change, is run a PolyBioMarine polyfilter in your sump and maybe even an iron oxide based phosphate sponge product. If the problem is caused by phosphate and/or silicate, that should take care of it.

Good luck!

tcook1034 · 02-28-2007, 03:23 AM

Yeah Your right , My bad, 10 Nitrate / 0 Nitrite...

Thank you very much, I will try your suggestions...

02-28-2007, 03:05 AM	#1
tcook1034 Just Moved In Join Date: Feb 2007 Location: Michigan Posts: 12	Water Change Question Saltwater tank - Water Change Question? I have a 250g Reef tank, Nitrite 10/Nitrate 0/PH 8.4 (Thanks to Live Rock). I do a 15g-30g water change once or twice a month mainly for supplements. I use RO/DI water and Reef Crystals for the water changes. RO meter is showing 003ppm The day after the water change, my substrate gets full of brown/green algae. Has anyone experienced this, or know what may be causing it? Algae disapears after avout 3-5 days, most likely from the golbies.

02-28-2007, 03:13 AM	#2
Ninong Moderator Join Date: Jun 2000 Location: Louisiana Posts: 20,691	Re: Water Change Question Hi tcook1034, You can't possibly have 10 ppm Nitrite. Did you mean to say 10 ppm Nitrate? You may have a phosphate problem. Possibly even a phosphate and silicate problem. Whether R.O./D.I. units can completely remove phosphate always provides for interesting discussions. What you could try the next time you get ready to do a water change, is run a PolyBioMarine polyfilter in your sump and maybe even an iron oxide based phosphate sponge product. If the problem is caused by phosphate and/or silicate, that should take care of it. Good luck! __________________ Ninong

02-28-2007, 03:23 AM	#3
tcook1034 Just Moved In Join Date: Feb 2007 Location: Michigan Posts: 12	Re: Water Change Question Yeah Your right , My bad, 10 Nitrate / 0 Nitrite... Thank you very much, I will try your suggestions...

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