Slime in Sump???

[DarthSimon]

So I have been noticing the slime growing around my sump area??? Is this an algae? Out competing others??

 

[Randy Holmes-Farley Verified Community Expert]

Can't see much in the picture. What color is in in white light?

 

[DarthSimon]

Clearish maybe light brown tinge?

 

[Randy Holmes-Farley Verified Community Expert]

Clear/colorless is almost certainly bacteria. Brown could be dinos.

Bacteria is no particular problem, unless it becomes unsightly.

Are you dosing organic carbon (vinegar, etc.?)

 

[GodfathR]

Do you use Kalk in your ATO? I had developed slime by not rinsing my ATO container out for a few weeks. As soon as I started rinsing my ATO container out every other time I fill it up the slime disappeared.

 

[DarthSimon]

I dos nopox, 2 part alk and calcium.

 

[Randy Holmes-Farley Verified Community Expert]

NOPOX will be driving bacteria growth, and the slime you see is probably from that.

 

[DarthSimon]

Ok thank you Guys!!

 

[DarthSimon]

Randy,
My Apex flow sensor said my Cor was running at 195 and usual flow rate was about 230. So I decided to take apart my pump and skimmer this afternoon. This slime was all over the place. Cleaned out as much as I could from sump, and my skimmer and Cor20 pump has a small amount inside as well.... Nasty... So what's this look like to you??

 

[Randy Holmes-Farley Verified Community Expert]

If it is in dark places, it’s probably bacteria from the NOPOX.

 

[DarthSimon]

Meaning my sump? Yes the only light on in my sump is for my Fug, but it doesn't really hit anywhere in sump...
If I'm getting that kind a bacterial sludge, should I back off Nopox?

 

[Randy Holmes-Farley Verified Community Expert]

If it is causing issues clogging stuff, yes. Maybe try vinegar alone.

 

[DarthSimon]

I scooped most of the slime today, as much as I could see... As well as cleaned skimmer thoroughly and my Cor20 Return Pump... Hoping slime goes away...