Can I ask how long you've been in the hobby? No offense intended here, but I personally don't suggest (and wouldn't myself) put the money in for any equipment until you have a breeding pair. It sounds like you have some filtration and maybe husbandry issues to work through in keeping a healthy system before you are going to be able to consider breeding. You asked in the bengaii breeding thread about why you are loosing cardinals when you put them in - that's probably due to low water quality. Clowns are pretty tough little fish (more so than cardinals) - but getting them to breeding state is much more than simply keeping them alive.
I suggest that be your focus now: research general reef/salt keeping, read, research, ask questions in the forums about filtration and husbandry techniques specific to your situation to help you get your system operating smoothly and healthfully with low nutrients consistently. Consistency and stability (along with patience) are all KEY in this hobby. Also, put thought and research into how to maintain these husbandry techniques with as little effort as reasonable. Research some more and read some more... then start putting some of your research and $$ into practice. Once you get your system good and healthy and stable over a period of several months is when you will more likely be able to start worrying about breeding and purchasing the equipment needed for this. Otherwise, I'm affraid you are most likely setting yourself up for disappointment and heartache.
Best of luck to you!!