Hey plum thanks! One thing about this hobby is that there are many "right" ways to do things, yet at the same time they all have to abide by the laws of nature. As I touched on earlier I am against certain types of mechanical filtration, mainly flosses, sponges, or anything of the sort. Along with the bad they completely strip the water of beneficial microfauna. When I break out a flashlight in the middle of the night there is sometimes a "soup" of planktonic life in the water. Also I feed heavily different types of frozen foods, along with 10 mLs of DT's phyto every other day, and this too would quickly be taken out by certain mechanical filtration. Corals have polyps for a reason beyond hosting zooxanthellae
. Protein skimmers I support though, and when originally setting up my nano I left that option open. It turns out I have no need for one. Protein skimmers remove wastes before they break down, yet my refugium, live rock, and sand have handled everything I could throw at the tank, so why add one? I will have one though when my 180 goes back up, regardless of whether or not I'll truly need it.
Regarding the Wet/dry filters, I can say that I originally I used them. My first saltwater tank I got at age 12, with a good old wet/dry. My tank was set up with bleached coral skeletons and a crushed coral bottom, typical of the times (about 13 years ago). It was a great technology and idea, as our tanks quickly had to deal with the buildup of ammonia and nitrite in such a sterile environment. Wet/dry filters were the perfect answer to this, providing a prefect oxygen filled environment for the nitrifying bacteria species that break down ammonia and nitrite. The result was nitrate, which would buildup to certain levels that sometimes became a problem, but was a big step up from dealing with the more dangerous ammonia and nitrite. Nowadays, with the addition of things like quality live rock, live sand beds, DSBs, refugiums, etc., dealing with ammonia and nitrite is not as much of a problem. These additions to the aquariums quickly deal with ammonia and nitrite, so in my opinion wet/dry filters are not needed. They are not bad for a system, and they don't "create nitrates" and some people misunderstandingly say. In certain systems they may be of benefit, but the majority not. If you do have live rock and live sand, even without a refugium, and ammonia and nitrite are a problem than something is out of balance in your aquarium. Anyway that's obviously a long answer there, but that's sort of my philosophy that I've evolved.
Regarding water changes I do usually a gallon a week, and once in a while I'll do one in the middle of the week also for the heck of it. I never register nitrates, so mainly I do water changes to replenish trace elements and other things that may be utilized without us knowing it from fresh saltwater. Many people say they never do water changes, and to me that's like saying, "I've been living on just hotdogs for 10 years... I'm still alive!" There are many elemenet additives, but the problem is how do we know how much of A,B,C, and D are being used? Most of these things we can't test for. So, if in our aquarium say A and B are completely depleted, while C and D are at NSW (natural sea water) levels. If we add a trace element additive with amounts of A,B,C, and D found in NSW, we may be replacing A and B, but adding too much C and D to the point where it becomes in some way detrimental to our tank. We just don't know. THE EASIEST WAY IS TO REPLENISH OUR TANK WITH FRESHLY MADEUP SALTWATER. Anyway I hope you get my drift
There are some of my philosophies...
Johnny
PS- looking forward to meeting you and your tanks plum.