Why is there space under the first 2 chambers in an IM Fusion 10?

[saltyhog]

My clown gobie jumped over in to the return chamber on my IM 10. Every time I tried to catch he just went underneath the first two chambers. I finally drained the water down in the back chambers till his back was out of the water. This slowed him down enough I was able to block his retreat underneath the first two chambers.

Why the heck does that space exist? What purpose does it serve?

 

[downloadking2006]

My Midas blenny is in the back of my 30 gallon AIO I'm gonna try and get him out next week when I do my water change.

 

[rkpetersen]

Why the heck does that space exist? What purpose does it serve?

Been thinking about getting one of these but you're right, there doesn't seem to be a good reason for it to be there, rather than just extending the two baffles all the way to the bottom. And it creates a dead zone where there is no flow at all. I guess you could perhaps create a denitrification zone there.

 

[SashimiTurtle]

I'm not sure if the Nuvo 10 is the same as the Fusion 14, but the return chamber on it was L shaped. It had a dead space under the first two. I had a 1" Biota coral beauty make it thru the first two chambers and behind the return pump chamber, UNDER the first two.

 

[saltyhog]

I'm not sure if the Nuvo 10 is the same as the Fusion 14, but the return chamber on it was L shaped. It had a dead space under the first two. I had a 1" Biota coral beauty make it thru the first two chambers and behind the return pump chamber, UNDER the first two.

That's exactly the situation I had to deal with. I drained the water down so low that he had to really work to move much and then scared him in to the return chamber with a flash light and tapping on the bottom of the first chamber. When he struggled in to the first chamber I got my hand down in there and blocked his retreat. Then was able to pick him up. He's happy and back to normal in the main tank.