if it's at the bottom, I think the "salt" is trying to move up into your bottle, creating some density gradient that is visible. That's just my thought tho, since your bottle opening is relatively wide and it is submerged.
Sounds plausible!
The water has no salt in it. It is just walmart distilled water in a bottle.
It does. The bottle in the video is just distilled water, no salt.
I am getting a tds meter and an rodi unit for Christmas.
the salt solution rising up from the tank....part of osmotic pressure, high concentration moving to lower concentration. technically, it'd just be the salinity - it's like when you first mix syrup with water, you have the "thicker" syrup just sitting, with "lighter" water floating on top
it dissipates when I pour it into the tank but you can visibly see it going into the tank.
If you pour that water into a glass from a freshly opened bottle before it touches the tank and it does that then there is a problem. If not, it's the salt water from the tank as everyone is saying. It wasn't clear to me if you have done that from your previous post. Have you done that?
It's visible in the container before I add it to the tank also.
hmmm..... this might be it. I will check it just in a clear bottle before I ever add it to the tank. I was experimenting with a cheap auto top off method for this "budget reef" and that is when I noticed it. I never noticed this oily stuff in my other reef which auto top offs into the back chamber of my aio.
I am getting a rodi unit for Christmas anyway but I would hate for this to mess up other reefs if there is some type of additive. My original reef has never really thrived like it should with good stable parameters so I'm always looking for the missing link. ICP test showed a red flag for potassium so maybe that's it too.
