[philbo32]

Originally Posted by cksss

Wow this is mindblowing!

Seems like the bacteria are more important than anything else to ensure the success with the sponge. Do you change water to make up the lost of nutrients or dose anything else such as silica for the sponge?

I've started carbon dosing recently in hope that my current sponge will do better than my not so good past records But i cannot imagine overflowing the skimmate back into the tank

Amazing setup!

Thank you!

I occasionally do water changes but not that often. I am pretty sure that the sponges that I currently have are calcareous spicule types not silica, as I do not currently dose silica. I have done in the past to try to increase diatom numbers. I occasionally dose iodine and iron for my plants and corals.
With future sponges I will definitely try dosing silica again.