Two things to caution just from my own experience:
Current Nova's aren't that amazing. I'm not trying to rain on your newfound buyers feeling or anything, but I ran a comparison of a 4 bulb nova against a 2 bulb glolight and a 4 bulb teklight. Teklight>glolight>nova.
The 2 bulb glolight was putting out more light than the 4 bulb nova. I know pleanty of folks who use the nova, and I did only test it with the bulbs it came with while the glolight was running geismann's, but still, just throwing that out there.
Also, in a nano like that, be reeeealy careful with the oyster eggs. They tend to polute the water somewhat simply, and in tanks with a smaller/not as awesome skimmer, the skimmer tends to go out of whack. I'm running a tunze 9002 (a pretty good skimmer by most standards) in my 35 gallon nano, and I still have to turn it off for at least 4-12 hours after feeding the oyster eggs. Instead I like using the prawn eggs/roe that someone else mentioned. Use a turkey baster, spot feed the zoa's and especially the palys, and you'll get good growth.
Lastly...just a random add on, do experiment with lighting. I have a colony of lunar eclipse palys, their growth has simply exploded since being hidden by a frag rack. They always looked good in full light (the 4 bulb teklight) but when they got hidden, it was simply astounding the growth they've undergone. I've experienced similar with other species, just not to that extent. So if you're trying to get something to multiply, play around with both increasing, and also decreasing light amount.
HTH somewhat.