mellowhead
Active member
Krish,
The tank has been up for about 1-1/2 yrs. It's a BB tank with about 65-70LBS of LR that I blow of with a turkey baster a couple times a week. The rock is supported off the bottom of the tank with arcylic rods placed into a peg board piece of acrylic. My return from the sump is into a spray bar located under the rock.
I have approx 4500 GPH or flow in the tank.
I'm leading towards testing error right now, But i need to rule that out. I think I might take some water do to another LFS in my area and see what they test. Of course this won't really mater all that much if they're not using salifert. It will only provide the results based on the test they use. Which is who knows how accurate.
Have you cleaned you equip? If dirty this would make sense....