Light grey covering the sand

The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.

FishN00b83

Aquarium Advice FINatic
Joined
Jun 7, 2011
Messages
581
Location
Queens NYC
I've been battling a GHA outbreak, and I think I'm winning. With the weekly water changes I have been stirring up the sand real well to get all the crap out. When I'm done with the water change and everything settles I get this light grey dusting over the sand. over the next few days it will slowly turn dark brown and look nasty.

I use nothing but 0TDS RODI water and I have 0 nitrates when I test with the API master kit. What can I do to stop this from happening? I have one Koralia nano 240 ph in a 29g biocube (soon to be 125g).
 
Back
Top Bottom