Calcium & Alkalinity Build Up

[JohnPH]

Hi, I recently begun dosing my 4 month old aquarium with Seachem Part 1 & 2 via a dosing unit that is adding the chemicals to my return pump chamber. All the levels in my tank seem fine but I've just noticed a lot of white 'spots' that have built up on a lot of the plastic surfaces in my sump (mainly on my heater and on the walls that separate the chambers). They are like tiny granules that I can remove with my fingernail so I can only presume they are something to do with the calcium or alkalinity that I'm adding. Is this normal? Is it an indication that somehow the chemicals are not mixing with the water sufficiently?

Any advice welcome!
Thanks

 

[dwest]

Hi, I recently begun dosing my 4 month old aquarium with Seachem Part 1 & 2 via a dosing unit that is adding the chemicals to my return pump chamber. All the levels in my tank seem fine but I've just noticed a lot of white 'spots' that have built up on a lot of the plastic surfaces in my sump (mainly on my heater and on the walls that separate the chambers). They are like tiny granules that I can remove with my fingernail so I can only presume they are something to do with the calcium or alkalinity that I'm adding. Is this normal? Is it an indication that somehow the chemicals are not mixing with the water sufficiently?

Any advice welcome!
Thanks

I wonder if they are spirorbids?

Spirorbid Worms | Melev's Reef

Tiny white dots about the size of a pinhead can be found in reef tanks, overflow boxes, and sumps as well as on return pumps. They are Spirorbid Worms, which are filter feeders. It won't hurt to scrape them off if they obstruct your view, but they are harmless. This image is of their selfmade...

www.melevsreef.com

 

[homer1475]

I was thinking the same thing. Probably spirorbid worms.

Pics?

 

[JohnPH]

Wow do you know what I'm pretty sure you're right. They look just like tiny specs of calcium to the naked eye but I took a photo and zoomed in as far as I could go & you can definitely see the curved shape. Thanks both that's really helpful (and good to know they are harmless)