Let me start off with a question. I would like to start a reef tank like the one you have. Would you do it again or stick with gold fish? I know that they are a pain to get started and require a lot of work to keep it going but just how bad is it?
jw -
I wouldn't go back to any other kind of tank after having this one, but it can be a complete nightmare...it is expensive to maintain (replacing metal halide and compact lights every year, new filters for the sump every year, 80 lb bags of salt every two months or so, coral's expensive, fish are expensive, chemicals like calcium and iron are pricey, test kits, special foods for certain types of animals/corals)...
The startup is probably the biggest hurdle (tank, stand, lights are expensive!, live rock if you're going with a reef system is very pricey - I believe I spent $800+ on that pile of rock in the startup pic) and then if you experience problems along the way, that can become quite costly (I know of a woman that lost $15,000 in fish and coral during a snow storm; her generator failed and she lost everything)...
If you decide to do it, the best thing I've learned after so many years of water changes in all kinds of tanks is to set it up like we set this last 120 gallon tank...we had a hole drilled in the bottom right back corner and put in a ball valve. My husband plumbed that valve into our plumping under the house, and when I need to change water (every week), I just open the valve, water empties out, then I close it back up and have replacement salt water pump in from the blue bin under the tank...hauling buckets and hoses for water changes gets old real fast, and then H2O changes tend to be skipped...
Would I do this again? Yeah, I would...it's been fun, even with all the frustrations...and my kids love it...they're becoming my little marine biologists...
The key is to not have problems! That's nearly impossible, but that's when owning and maintaining the tank is a headache...
If you have any questions, just let me know and I'll try to help you out...best advice is to find a very knowledgeable salt water dealer in your area, someone that you trust and that will answer all of your questions without seeming like your bothering him/her...