...how do you determine the lighting requirements for specific corals when asked? Do you find yourself generalising? or being species specific?
Trial and error mostly, as there seems to be only a few places to find numerical data (PAR values or similar) about sucessful placement of some corals in captivity. Until more concrete ranges have been established by those with meters to measure light intensity for more corals, trial and error is what I find myself going on. Since I don't have one of these meters myself yet, I do my best to describe the coral's location in my tank, as well as the exact lighting it came from (type, ballasts, specific bulbs, photoperiod). It's kind of funny the look I get sometimes when people ask and I reply with a rather exact answer including a distance measurement from the top of the water.
Why have you chosen the corals that you have? Are there ever any environmental ideals behind your choices?
Corals are chosen for our tank based on what we like. It's been no surprise, but our taste in corals has evolved as we've been in the hobby longer and simply had the opportunity to see more of what's out there. If we can buy captive grown or aquacultured specimens, we're all for it, but it's not necessarily a deciding factor for us. The order tends to be:
a) Do we like it?
b) Does it tend to do well in captivity?
c) Will it fit in our tank?
d) How much does it cost?
We certainly buy aquacultured specimens intentionally when we see something we like, from places such as ORA, The Coral Gardens, Scientific Coral, World Wide Corals, etc.
If a worldwide program was setup for coral propagation, with a view to building brand new reefs around the world, what would you donate? would you donate freely? even pay the shipping?
I would gladly donate all but a frag of each coral in our tank if such a program was established and credible. As long as I have that small frag for myself to continue to grow out and propogate, I would happily give back the rest of the colonies to the oceans. I wouldn't mind paying the shipping, either, as long as they would take everything all at once or in a very small number of shipments. I'd be all for helping the cause, but I'm not going to be too excited if I was expected to send one or two corals at a time -- that would be a hefty shipping bill. But, I would imagine that for a cause like this, a shipping company would be willing (or at least should be willing) to offer some sort of discounted rate to help do their part.