JapanReef - 450 gallon In-Wall system

Thanks 55semireef. :)

So the Denitrator has been in operation for 3 weeks now. Pretty sure it's working as I just tested the water and nitrate is about 7. I checked this thread and 5 weeks ago in this post I mentioned it was 20-30. In the two weeks from then to powering up the denitrator I believe I got the nitrate down to about 15 via cleaning and water changes so hopefully this piece of equipment will see the nitrate off completely. :)
 
I'm also curious on your nitrate issue as I'm looking into sulphur denitrators... Please update us if you can. :)
 
<a href=showthread.php?s=&postid=8505888#post8505888 target=_blank>Originally posted</a> by Psyire
I'm also curious on your nitrate issue as I'm looking into sulphur denitrators... Please update us if you can. :)

I am curious as well ?? Any updates on the tank and the Sulfur DeNITRIFIER ??
 
Hello Nexdog????

Where you at, it's been a while and some of us have to live vicariously through your tank;)
 
<a href=showthread.php?s=&postid=8698560#post8698560 target=_blank>Originally posted</a> by gregmoeck
i thought he converted the tank into an african cichlid tank

I hope not!

He's put so much effort out already!. I just hope all is OK with the dog and his beautiful tank!
 
Greetings all and apologies for my absence. I had to travel alot and then have had a lot of issues to sort out and just haven't had a chance to focus on the tank.

The result is that things aren't going very well. I haven't bought anymore corals since some started to STN and Ive lost most of them. Lots of alk related issues that are causing that I'm sure but I'm trying to stabilise that now.

I was never a big fan of water changes but have started to do a monthly 50g water change now in the hope of bringing some stability to water parameters. It's weird because after every WC I get a diatom and cyno outbreak as if I'm flushing away the denitrifying bacteria the tank needs.....

I solved my tank's heat problems a few months ago. Slightly late for the summer but at least next year it's one thing I don't have to worry about. I got some guys in and they set up some sweet ducting. I have ducting attached to both ends of the lighting hood that connect to a box next to the fan that sucks the air outside. I also moved the ballasts around the corner and made an aluminium cover that also has ducting sucking the hot air from the ballast box. Some pictures to explain:

Here is teh general idea. You can see the three duct lines going into the main box. From there it's one pipe to the extraction fan. The bottom box at the back contains thw ballasts:

duct1.jpg


Close up of how the ducting is attached to the hood. It slides off quite easily too for easy maintenance. The old hood fans are still in there except they whizz around at 5 times the speed - the extraction fan is that powerful. In fact it takes a certain effort just to close the door of the room when it's on. :D

duct2.jpg


Close up of the setup near extraction fan:

duct3.jpg


And the fan outlet on the outside. This thing has serious power!

duct4.jpg


Few other issues.....

Both the Vortechs are broken. I haven't visited RC much but what's teh general consensus about this product? I have contact Aquarium Specialty and requested they both be replaced or a full refund. One just won't stay on (at all). Stick it on, turn on pump, fall off. Nothing will make it stay up. And now the other has come all loose. The magnet is falling out the propeller housing. In fact I've been running the tank on just one Vortech for 3 months which has contributed to the coral decline I'm sure. I just haven't had the chance to sort all this out till now but now I'm on the case.

I guess the Denitrator is working although the desired effect isn't there (i.e. no diatom). Nitrates are down to about 3 but I stay have bloody diatom and brown sand. I think I just don't have enough rock in the tank to maintain a diverse biofilter due to the racks I put in there. The Denitrator is supposed to fix that but I'm thinking about adding more rock to unused compartments in the sump. Brown sand just makes the whole tank look shoddy. :(

Anyhow, that's about it. :)
 
Welcome back!

Visit the EcoTech forum, there's lots of disscusion on the symptom you're having. They are correcting it for those with the issues. Mine has worked flawlessly.
 
WB Nexdog! Sorry to hear of your problems with the tank. That fan system is sweet and I really like how you incorporated the ballasts into the system. I tried to figure out a way to do that with mine but they are mounted too far apart. Very cool.

Regarding the tank issues, I would guess that the lack of water changes has been the primary culprit. Because our systems are captive, there is no natural way to wash the sand & rock. It has a "capacity" and when that is exceeded all sorts of symptoms occur. It' salways difficult to pin down a problem with so many variables at play, but that is a key issue. You have got to do water changes which export nutrients as well as replenish various elements including magnesium, strontium, etc.
 
How did NexDog go from posting every second of the day to months and months of absence? How is the blue line? Did the regal ever reappear? How many microbubbles does it take to make a grown man cry? Were the Vortech's replaced? How are the corals? Was a new anemone ever tried? Did Blake really break up with Christine because she got amnesia from her half-identical grandmother? How did the Heni's turn out?

So many questions!
 
Greetings All. :)

Things aren't going too well in teh tank. Well, the coral isn't doing well, everything else is fine. I lost one of the Heniochus a few months ago. Never found it, just disappeared one day. All the other fish are doing well with the Emperor Angel well on his way through transformation and now the biggest fish in the tank. But pretty much all the coral is dead or dying so what happened?

Well quite a few things. The tanks was turning into a money sink and I found myself unwilling to keep ploughing money into it. As you all know I import alot of stuff which adds to the cost and there's always stuff you need. Lights blow, pumps break, filters need changing and none of it is cheap. I earn a nice wage but I do have a family to support as well. :p

As well as the cost, constant issues nagged at me like heat issues in the summer, and then during the winter my RODI unit wasn't producing alot of water - not enough to top-off even and certainly not enough to do a water change so I have been using alot of tap water to top-off. I checked my PO4 levels and well, not suprised the corals are dying.

So I need to turn things around. After all I spent thousands of dollars on this system, designed the house around it and people still love it. All I need to do is focus on it. I'm a stickler for routine so I'm going to designate Friday as my tank day. On Friday I will spend all day if need be on the tank. I'll switch the computer off if I have to. :)

One piece of good news is the heating issues are fixed. That huge extractor fan does the job very well. But I have to turn it off at night as the fan just sucks out all the cool air produced by the air-con. Last night it cooled down to 26.1C (79F) and today with it being 35C (95F) outside, the tank water is 27.5C (81.5C). Is this kind of temperature swing within acceptable parameters?

Ever since I installed the new fan the glass on the light hood has cracked and broken twice. I think the fan has such incredible force that sucking the air through the hood is stressing the glass. One side is still broken.

Okay, so my first task is to get a decent RODI unit. I need a unit that that produces alot of water quickly. Unit I've been using is a Kent Marine Maxxima Hi-S but I don't believe I ever got more than 30GPD out of a 60GPD system. So I need something with power. Completely open to suggestions but I prefer to buy from MarineDepot, Aquarium Specialty or Premium Aquatics. Nothing but fabulous experience from all those vendors. How about a beefy SpectraPure Spectraplus2000 180 GPD RO/DI? Expensive but if it's going to last me a year, I'm not bothered and I still need good output in the winter months.

As for the Vortechs, both broke ages ago and Aquarium Specialty sent me two new ones for free. And I still haven't installed them. How's that for apathy?

Had the Hamiltons for 18 months now so that's another thing I need to change. I enjoy the tank the most when the PC lighting is the only lighting I see (from 6pm-10pm). I remember I had some nice 400w 20k bulbs lined up but I can't remember which ones now. Anyone have any ideas for this bulb that will work on a PFO hood (pulse start ballasts).

Great, just noticed my last 2 PCs bulbs are out. They last 2 months on average. :(
 
Hey NexDog

Sorry to learn of your troubles, adjusting to seasonal fluctuations is always hard on a new tank in a new location ( Iam on my third such learning curve in a little over four years)

I'd be happy with a 79 to 81.5 swing during a heat wave.

Try your new VorTechs and read the EchoTech thread as many folks had troubles with some of the early issue units. Fortunately mine has worked great, I did spin a bearing but they sent me a new one that is much better.

Try melevs Reef for some info on RODI options for your situation.

http://www.melevsreef.com/ro_di.html

... and let's see some pics of that Emperor! :)
 
<a href=showthread.php?s=&postid=10394915#post10394915 target=_blank>Originally posted</a> by NexDog

Great, just noticed my last 2 PCs bulbs are out. They last 2 months on average. :(

Isn't that odd that PC bulbs are only lasting 2 months???I remember you had to set up a power converter to be able to use standard american stuff at 120 V. 60 hz with your Japanese power supply...was it 50 hz???? Are you getting the correct amount of voltage and current out of that converter??? I would think your power compacts should last you at least one year, and never actually fail....just lose brightness and spectrum.....seems odd to me....

D
 
That's the first thing I thought of but we are in the 60hz part of Japan and the voltage is correct. If anything the voltage is a bit lower than 120v so it's not as if they are blowing due to too much juice.

They seem to be very fragile and when they blow I need they are cracked somewhere.
 
Seems like the PCs are cracking for the same reason the glass is. It's hard to believe the fan would have that much impact. Maybe you should try one sucking hot air out and one blowing cool air in, and leave them on all the time so that the lights don't get a chance to get super hot before the fan kicks on.
 
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