thats a point for some setups, but not everyone has caulerpa (or any macro for that matter) in their fuge so to say that "Corals are not the best ithing to put in a fuge..." is in your situation, not everyones.
everyone has a different use for their fuge(s). fore example, you may keep caulerpa while others keep chaetomorpha and others keep halimeda and still others are more into gracileria. its all a matter of opinion. i have no coral in my fuge, but if i had a coral that seemed to be suffering due to the light being too intense (if i had intense light
) i could see moving it to the fuge where the light is
PC.
i disagree with your opinion that a
DSB is only good in a "large tank".
call me a weirdo
but my display tanks are currnetly 29g and 10g. the size of the refugium is relative to the size of the display itself. for example, a 20g refugium on a 29g display is huge for the tank its on (which is GREAT!) but the same 20g refugium on a 1000g reef is not NEARLY as functional!
so, if you run a
DSB in a 10g thats NOT too small. even a 5.5g with a
DSB isnt bad. it depends the size of the tank it is going to filter.....
also, many people have multiple refugia or at least a sectioned refugium where macros can go in one compartment, rubble in another, etc.
i am not going to say what one should do with their refugium because it should be open to their intentions for the device.
what can i say - the refugium method is a controversial one... even those who swear by it have entirely different opinions of exactly what "it" is...
trying to help...