This is not really neptune related but....
I have a cyno issue right now, I'm trying to remove it from the rocks and a siphon does not really get most of it, need to brush and siphon at the same time. So I used my VERY crude CAD skills and made a simple brush that attaches to a 1/2 inch vinyl tube. I glued in some bristles from a cheap brush and there you go. So far it seems to work pretty well.
Please let me know if anyone finds this useful, or if there is a simpler way to do this.
PLEASE fell free to improve my crude design and upload to thingiverse
https://www.thingiverse.com/make:585282
brush1.jpg
brush2.jpg
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