Brown diatom on glass

[Randy Holmes-Farley Verified Community Expert]

Reef Crystals is well known for having a brown slime when first mixed, but I wouldn't expect that is what is being seen in the tank in this case, unless the salt is being mixed in the tank.

 

[SusanL]

I’m having the same problem. I have 4 aquariums and only 1 has the issue. I use Tropic Marin salt and mix the day before the water changes. I have a 6 stage RODI. Reading 0. Changed my filters last month hoping this would fix it but still have it in 1 tank. Any suggestions?

 

[Salty_Northerner]

Maybe stop doing water changes until you get an idea about what to do? Is it Phosgard that removes silicates, and silicates can cause diatoms?

Yes phosguard removes si

 

[Randy Holmes-Farley Verified Community Expert]

I’m having the same problem. I have 4 aquariums and only 1 has the issue. I use Tropic Marin salt and mix the day before the water changes. I have a 6 stage RODI. Reading 0. Changed my filters last month hoping this would fix it but still have it in 1 tank. Any suggestions?

Can you clarify exactly what problem you are having?