What causes the brown diatoms?

You should try chemipure elite. I believe some cheaper carbons leech into the water, and chemipure actually has GFO in it to reduce phosphates. Chemipure is only a couple bucks for a small bag, it keeps my nano crystal clear.
 
Well, after replacing the media basket with a new one from inTank and using chemipure and purigen, my dinos are pretty much gone!

20130107-_DSC3191.jpg
 
Awesome news !!! Glad that worked out for you.


That basket really forces the water THROUGH the media , not just around it.
 
Yeah, thanks Bryan. Great suggestion. :)

Had a couple questions though... how often would you replace the media? And for now I just rinsed off the oem sponge and put that in the basket instead of floss. I assume that should be rinsed periodically like when doing water changes? Rinse it in the bucket of old water?
 
Yes just rinse in water change water to prevent killing off bacteria.

Purigen changes color to an almost dark brown. It can be regenerated with a bleach water solution, but I never trust myself to do that so I just replace it when it looks exhausted.

Chemi-pure , I replace every 3 months. I have heard of 6 months, but I have never gone that long. I have also heard monthly, but that could get a little pricey
 
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