Could I use External Filter and Eheim Media for Filtration?

[Dung MVP]

Hello everyone
I need some advice. I just moved everything (water, live rocks, corals, fish) from 3 months old tank, 120cm to 120cm Rimless. I leave the deef coral bed because someone said it would be bad for long run, so now it's just bare bottom and I like it (don't want to use sand bed).
My questions are: is it going to re-cycle while just live rocks are in new tank?
I added more Bacteria to balance like in the old tank, is that right?
I don't know where Bacteria would go since I don't have the sump (just show tank only), I put SP in the show tank so Bacteria will be skimmed out?
What would cause Bacteria Bloom in any cases?
Finally, could I use canister filter with Eheim Media? Eheim said that their Media could use for fresh and marine but I don't see anyone here using it.

Thanks in advance.

 

[aquaman67]

I would say you might get a mini-cycle at worst, but probably not even that.

You are just moving tanks. If your rock was cycled before the move, it think it will be ok.

You can use a canister filter to move water by running it without the media in it if you already have it.

Your rock is all the filtration you need if you have enough. One pound per gallon at least.

I would not run a canister filter with the media in it on a reef tank.

You could run carbon in it. Just keep it changed regularly.

 

[Gary Majchrzak]

liverock harbors anaerobic bacteria that functions as the biological filter in a reef aquarium