Your pump may be too powerful for the MAME. The MAME is only capable of draining water at a certain rate so you have to make sure the return pump is within that limit. The only other problem I could see is that you're not getting a good siphon which I have a problem with sometimes when the MAME starts to get really dirty. Small bubbles are relatively normal with this overflow, it's just the big ones you need to watch out for.
I just installed a mame overflow but the suction does not work properly. The water level at the tank is always changing and there's bubbles inside of it.
In about 5 minutes of work, the water level goes really high and when it will leak, the bubbles goes off and the water level go down.
I'm using a 350 gph Syncra Silent pump. I see that you're using a 160gph eheim pump.. Do you now what could be wrong?
Thanks! I feel your pain though. The blue acro, ponape birdsnest, and orange monti were some of my favorites that had done really well at times too.
Tank looks great man.
I've recently had my SPS woes too, i just lost two Seriatopora colonies for no apparent reason. All my other SPS seem to be doing fine but suddenly those two birdsnests started dying out after they had previously flourished.
Yeah I was just never that happy with my PAR38's. Like I've said previously, I'm sure my water quality then was not nearly as good as it is now but I like the coverage and color much better now with the halide/T5 combo.
I think I am going to make the switch to T5's as well. Hype has pretty much convinced me. I am not seeing the color I'd like in LED's.