Water Changes, Sumps, And Protein Skimmers Oh My!

SkiFletch

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Well, I knew that someday I'd get the saltwater bug and apparently that day is here. A friend of mine is giving me his 45G tank to clean out his basement which I hope to over the next year or so turn into a reef tank. So I'm starting the learning process all over again and would like some questions and oppinions answered if you guys all would be so kind.

Firstly, a little bit about the setup I'm getting and think I'm leaning towards. The tank is 45gallon obviously, coming with compact flourescent fixtures (ballast included but no bulbs), 300W heater, some form of protein skimmer (not sure of type, model, etc), a mess of powerheads (some rios, vias, and mags), and we THINK as much sand as I want. It was a reef tank prior to being decommissioned, hence all the appropriate equipment. From all the benefits of a sump system that I've read in many articles, and the sheer engineering challenge, I'm going to go with a DIY setup. Through out this whole process, anything that I can DIY, you can bet I'll try. I'm one of those sick people that love working with their hands and have a machine shop at my disposal to do all manner of scheming :) For example, I built my hood, ballast, and stand for my 20 gal.

Anyway, down to the questions. Because I'll be running a sump with skimmer, how often will I realisitically have to change my water? Its my understanding that the algal and macro plant growth should in the sump suppport the load of nitrates that my system creates (if large enough of course) and balance out the end of the nitrogen cycle. Then from the little I understand about protein skimmers, they'll help with the remainder of floating detritous, toxins, and amino acids created by the tank. "Cleaning crews" help finish off the excess waste of larger organisms leaving to my untrained eye, very little waste products to clean out of the system. Coming from a freshwater world, I just did water changes when I vaccumed cause I dont have freshwater critters that eat fish poop, but that doesnt seem to be the case with salt water. So, realistically how much and how often do I have to do water changes?

Also, I'm having trouble grasping exactly how protein skimmers work... If anybody knows any good sites or articles I can read up on them that'd be helpful. Moreover if you could point me in the direction of some types and models that might be suitable for a 45G setup, perhaps I can find out how the work from there. I understand what they're used for and the service they perform, but I really want to know how, from a physics/engineering standpoint they work. I'm secretly thinking of making my own skimmer if the one I'm going to be inheriting is too small/broken/old/etc. Lathe time is always fun :)

As always, you guys rock and thanks for your oppinions :)
 
Hey..welcome aboard and we're glad you going salty.

I have a 24G and do 10% weekly changes.

Quick discussion. A protein skimmer works by removing DOC's..or dissolved organic compounds, or , breakdown products of food, waste, etc.

Water, H20, is a polar molecule (one side is more positive and another side is more negative). When you bubble air through SW, the air/water interface provides an area for DOC's to 'line up', that is , almost like a head and a tail, and surround the air bubble. As the air bubble travels upward, it will pick up more of these DOC's until it reaches the surface. There, these proteins collect and are then gathered in a cup for removal. The bubbles can remove amines, nitrites, phosphates, etc.

Look at two brands, AquaC (the Remora for one) and the CPR BakPak2. SH
 
I'm pritty new to this as well and from what I've learned in a enclose ecosystem the trace elements are used pritty quickly so the water change is to replace these. And because one can't rid all of the excess undesirable compounds from the water.
 
I see, crazy trace elements :fun: that makes some sense.

So protein skimmers skim these trace elements off the top, but what to they then do with them? So you skim the surface of the tank, then what? put the skimmed water in some kind of resevior or separation chamber where you add bubbles to remove the waste products?
 
The skimmer don't insincerely skim the top of the tank it draws water through a pump witch can be located at the top middle or bottom of the tank or sump then this water is mixed with air and pushed into the reaction chamber where all the air bubbles with attached organic compound good and bad float to the top and make a foam, witch is the 'skimmate' the water then is pushed back into the tank by pressure. The trace elements are used up by the corals, live rock and fish. I think manly Calcium strontium and the like. Now you can dose these trace elements to bring down the amount of water changes needed, but if not you're gona have to keep an eye on them and do water changes to suit the build up of NO3 and PO4 and the decline of trace elements. This may seem a bit daunting at first but just go with what 'feels' right for your system.
 
Its not that daunting, just a lot of reading and involvement, which isnt that big a deal for me. Is there any way you could post a picture of the protein skimmers any of you use, somewhat closeup if possible? All these thumbnails i'm finding at various retailers are small and not very helpful :no:
 
I Personally dont add any trace elements to my set up - never have with any of them, your water changes (if dont regulary) should replace what is needed

:D
 
simmerskimming.jpg


This is my skimmer, it's downdraft seaclone 100
 
thanks a lot mat, thats really helpful. looks like something I could build myself. man, this whole project is going to be way too much fun :)
 
If you pm me I've got loads of plans I've done for skimmers, I was gona build my own but that woderful thing called e-bay help out.
 
yeah, i've been noticing how cheap some things are on ebay... surprised me to say the least
 
So Skifletch - how is this coming along ?

Have you learnt anything since this post ?

Funny reading this - you are my "guru" on these forums and this looks like the time you were the newbie :)
 
wow if ski fletch and matt were newbs once then maybe theres hope for the rest of us :shout:
 
There's definitely hope for everyone :D. Man this post brings back memories, thanks.
 

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