Is this brown algae?

bettamars

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This brown stuff was on the suction cups of my heater and looked gross, so while doing my water change today, I took them out and cleaned them, but before I did, I took pictures to see if anyone could help me identify this. It wasn't anywhere else but the suction cups.

I also have a lot of biofilm flying around my tank since I tried to clean the pieces off my filter intake, but when the water came out, it all ended up back in the aquarium to float around until it got stuck on the filter intake again. Any ideas how to fix this issue too? My lights are on 8 hours a day (they're not very good lights, just a starter kit hood). The temp is about 77-78 degrees and I only have fake plants at the moment. The only inhabitants are 4 harlequin rasboras right now. I'm getting the other 4 today hopefully.

These are both of the suction cups:

ImageUploadedByFish Lore Aquarium Fish Forum1436220024.440548.jpgImageUploadedByFish Lore Aquarium Fish Forum1436220036.988915.jpg
 
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bettamars

bettamars

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CindiL said:
Yes, diatoms/brown algae. I noticed you're in WI too. Are you on a well? I am and my phosphates are high enough that I could never get rid of diatoms until I started using Seachem Phosguard which gets rid of silicates and phosphates.

Here are a couple of articles on it:


https://www.fishlore.com/aquarium-algae-control.htm
Thanks for the links! I don't have a well, I use tap water. I live in the Appleton area, so we get our water from lake Winnebago and it goes through our local water treatment plant I wonder if my tap just has a lot of phosphates? Unless the diatoms start to get everywhere, I probably won't worry about getting rid of it via chemicals since I'm fine with just cleaning off the suction cups every once in a while
 

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