Brown Slime in Auto-WC Reservoir

[rtoris288]

So I can't for the life of me figure this one out. I used to use a glass 10g tank with a heater and pump to mix my salt for use with a Apex DOS to do daily small water changes. We've since converted that tank into our quarantine tank and purchased a Trigger Systems Aquamarine Triton ATO Reservoir to use in its place. I put in a new pump and heater to mix the salt, and then added an Apex temp probe to monitor it as well. A few days later I noticed a bunch of brown algae growing on the sides and pump and decided to empty and clean it. My original theory was that I didn't clean off the temp probe that I took from my overflow chamber in the tank and it contaminated my WC reservoir. I did a pretty good vinegar based clean of all the equipment and filled it up again. Same thing is happening though. What's causing this?

 

[Auquanut]

What salt are you using? I've noticed that the longer my SW mix sits the more precipitate and brown fuzz I get with Fritz. It's not nearly as bad if I don't heat it. If you're doing auto water changes, do you really need to heat the water? I'm sure you will get better advice soon.

 

[rtoris288]

What salt are you using? I've noticed that the longer my SW mix sits the more precipitate and brown fuzz I get with Fritz. It's not nearly as bad if I don't heat it. If you're doing auto water changes, do you really need to heat the water? I'm sure you will get better advice soon.

I'm using Red Sea Pro salt. The heater was mainly to help the salt dissolve when I initially make a batch but I suppose I could just shut it off afterwards.