I don't use them myself but from what I've seen from most users is that they build a box out of egg crate that fits in the sump and the siporax is stacked in columns inside the box. They aren't meant to tumble.

Theoretically, they work better in a reactor with slow flow to encourage anaerobic bacteria. However, many people are getting good results in a bag or eggcrate box in the sump. The key is low flow and not to let a waterfall go into the Siporax.

just received my 10L today, how should this media be clean before adding to tank, or is it not necessary, just taking precaution to not add any unwanted chemical or dust . Please advise.

Soaked mine in RO for a few days... Changed the water after agitating them a bit. Not too much dust. I think u can also soak them in tank water... Starts seeding them

would boiling them in RO water for 10 minutes be a bad idea?

I don't think it would be bad, just not necessary.

Most people soak them in RO water. Some also soak them in salt water with a bunch of bacteria such as MB7 or Prodibio BioDigest.

I soaked in RO for a couple weeks, and changed the water out every couple days. I was half-heartedly looking for a container to house them which took me a couple weeks, so I did the rinsing simply because I could. Siporax is glass, so really the only thing it could leech is silica. Here's a thread discussing it with Randy Holmes-Farley. http://www.reef2reef.com/threads/doe...silica.267161/

Does anyone know if it's safe to add large amount of siporax at one time, or should it be done slowly. I plan to add 5L to an established reef with 40lb of matured live rock. Not sure if siporax requires a curing stage before adding such large amount?

Hate to resurrect a old thread but I'm starting a new shallow reef and wanted to add to my sump rather than display. I was advised that Siporax might be the way to go over Marine Pure. Everyone that is still using it happy with how it's doing, any down falls or would you go a different direction now?

Seems to do the trick... I'm now dosing NO3😂