<a href=showthread.php?s=&postid=15274278#post15274278 target=_blank>Originally posted</a> by welsher7
The lack of bubbles has to do with the different densities of sw and fw, I think.
It's totally normal when using freshwater. It's not a pump issue.
<a href=showthread.php?s=&postid=15275631#post15275631 target=_blank>Originally posted</a> by melev
If you want to see bubbles now, dump in a good cup of vinegar and enjoy.
You can get 1/4" foam at Home Depot. It is sold as a rolled up product, and would still cushion the base of the sump.
1/2" isn't much room, but it should work. You could do a dry run to verify this. Before you install the sump, apply some clear contact paper to the ceiling area above the skimmer. That's the thinnest material I can think of. Air vents out of the cup's lid all the time, and it would be blowing against the wooden stand material. If the skimmer overflows, the foam and byproducts would soak into the wood. With the contact paper, you can wipe it clean with a sponge from time to time.
<a href=showthread.php?s=&postid=15281887#post15281887 target=_blank>Originally posted</a> by melev
That's fine, and should work. You may need a freshwater phosphate test kit perhaps - I don't know.
The thing about acid is that once you are done, you have to be able to get rid of it. If you pour it out on concrete, you will bleach that spot as it etches it even as you rinse with a garden hose. If you pour it on soil, it burns as well. I usually dump mine out in an area that has no life anyway.
Are you going to use any liverock at all? It takes a long time to seed dead rock.
<a href=showthread.php?s=&postid=15282055#post15282055 target=_blank>Originally posted</a> by melev
That's some pricy LR. For a 180g, I'd be looking at about 200 lbs of LR most likely. The LFS near me will order boxes of Fiji. You get 45 lbs for about $180 per box, sight unseen. That's not even 25% of the price you posted above. Something about South Carolina and LR pricing?
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<a href=showthread.php?s=&postid=15284232#post15284232 target=_blank>Originally posted</a> by leagues58
Figured I'd butt in at this point-
a) Hi- another South Carolinian!!
b) I bought TBS rock about three years ago and finally managed to catch my last mantis shrimp last week! (Three in all). Also be aware of Gorilla crabs- I had quite a few of those. But to echo what Melev said, the random life makes it worth it- I got a blenny swimming around in the bag!
c) love the sump/acrylic work
<a href=showthread.php?s=&postid=15284676#post15284676 target=_blank>Originally posted</a> by Hop
Hey Claudio. This looks like a great start and the sump looks fantastic.
It has been my experience that the dry base rock seems to have quite a bit of PO4 locked up in it. I suspect, but have little to support my theory that is is simply a matter of once living things dying in the rock, having the rock absorb it and basically lock the po4 in it, even when dried and bleached. I've been able to prove this by soaking base rock in SW and letting it sit in a covered bucket for a week with circulation and testing for po4 at the end of the week. both times I did this I had a reading greater than .2 on an API and salifert kit.
My suggestion if you are worried about it is to soak the rock in a 1:1 water/vinegar ratio for about a day (muriatic acid works also, but I think the ratio is 4 parts water, 1 part acid). Then move the rocks into a cooking vessel (some type of bucket/container/tub) and soak in SW with some circulation, temps at or above 78 degrees and no light.This is a great time to add about 5-20% of live rock and begin the seeding process at the same time. At the end of each week test the water for PO4. if you have a PO4 reading, do a 100% water change and repeat until you have no PO4 reading. The vinegar bath on dry base rock will reduce the time of the cooking process.
HTH
Again, great build so far!
<a href=showthread.php?s=&postid=15285125#post15285125 target=_blank>Originally posted</a> by Hop
No worriesDistilled white vinegar works well and can be found cheap. I would see what size container you need for 160lbs of rock... Maybe a 44 gallon Brute? I bet you would only need about 5-7 gallons then...