Shrimpfoot Posted September 14, 2018 Report Share Posted September 14, 2018 I have started having problems with my nitrates rising in my 10 blue bolt tank with a hmf on it. So I was doing a water change to see if that would help then noticed behind the hmf there was about a half inch of brown detritus so vacuumed as much as I could out. Could this be the reason for my nitrate spike? Thanks in advance. Chris Quote Link to comment Share on other sites More sharing options...
madcrafted Posted September 14, 2018 Report Share Posted September 14, 2018 What ppi is your sponge rated? It could be sucking up the smaller bits of organic matter and settling behind the sponge. Too much feeding of powdered or "messy" foods can seep right through sponges easily. It has to settle somewhere I guess. I would assume HMF would trap a lot of organic matter due to the large surface area, which will ultimately be converted to nitrates anyways. Best you can do is keep up with water changes and maybe feed less. Shrimpfoot 1 Quote Link to comment Share on other sites More sharing options...
Shrimpfoot Posted September 15, 2018 Author Report Share Posted September 15, 2018 I have just started feeding more powdered food maybe I will cut it down and continue to suck out the junk behind. Thank you for the response. Quote Link to comment Share on other sites More sharing options...
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