Sea-Lab no 28 blocks seem to be making a comeback, what's your experience with them?

mizimmer90

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This is my first time hearing about these "magic" blocks but... wow what nonsense lol

Quote from Amazon "This is not a slow-dissolve or time-release product. It dissolves only to replace depleted elements." Which sounds not possible at all...
 

Randy Holmes-Farley

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This is my first time hearing about these "magic" blocks but... wow what nonsense lol

Quote from Amazon "This is not a slow-dissolve or time-release product. It dissolves only to replace depleted elements." Which sounds not possible at all...

It’s not actually impossible. Maybe it really has a mini ICP-MS and 16 little dosing pumps inside each block. lol
 

Randy Holmes-Farley

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I want to see someone throw one of these in a bucket of sea water and show that it never dissolves lol
Nice. Proof without any testing needed.
 

Randy Holmes-Farley

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FWIW, someone is testing the blocks in their tank here:

 

Freshwater filter only or is it? Have you ever used an HOB filter on a saltwater tank?

  • I currently use a HOB filter on my reef tank.

    Votes: 26 31.3%
  • I don’t currently use a HOB filter on my reef tank, but I have in the past.

    Votes: 12 14.5%
  • I have used a HOB on fish only or quarantine tanks, but not on the display tank.

    Votes: 22 26.5%
  • I have never used a HOB on a saltwater tank.

    Votes: 22 26.5%
  • Other.

    Votes: 1 1.2%
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