My project 180 gallon Aggressive CA tank

  • We are currently upgrading MFK. thanks! -neo
Finally received the plumbing for the tank today. It was shipped out of Nevada and ended up getting routed to Toronto, Canada, which is a mere 80 miles northwest of me. It sat there for 4 days before getting shipped back to Michigan. Silly UPS.

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I also changed my mind concerning my stocking of the tank; I've scrapped the idea of doing a community tank and have decided it will house my pair of Festae that are currently in my 125 growout tank. Here's the male checking me out like he does, keeping guard over his fat bellied girl and watching the monster 6 year old female convict (behind him in this pic). ***don't mind the dirty glass...it's just a growout tank!***

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*Update* Tank Is Running!

I finally have the tank up and running. I ended up finding a really good job as a Technical Consultant; the downside is the hours are pretty long. In addition I moved to a new house and have been spending the majority of my time doing renovation type stuff here. For nearly two months I didn't touch things as work and repairs kept me busy.

I have seeded the new filter media with bacteria rich media from my existing 55 gallon (currently housing my Festae pair). I expect the tank to be cycled within 3 weeks.

I filled the tank over a 3 day period (the RO unit only does about 50 gallons per 24 hours). The floor or stand didn't make a sound...no creaks, cracks, or shifting. I have two jack stands in the basement below. Things are *very* solid.

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Durso standpipes are used instead of the stock overflow drains included. The noise is tolerable, but not as quiet as I had hoped (the 90 reef setup I recently purchased is considerably quieter even with the stock pipes). The dual QO4000s had to be throttled down a bit as they outperform the dual 1" drains.

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The drain tubes terminate at an 'H' pipe fixture that dumps in the filter socks. The 'H' pipe will allow one tube to become completely plugged and redirect water through the cross member to the other dump tube without overflowing the sock. I tested this and was really surprised with how well it actually worked. It also cut down on the trickle noise in the entry of the sump.

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I had to rebuild the plumbing twice; the first distribution block I made leaked out of every joint. As it turns out, the PVC glue had gone batch and would crumble when stressed. After a new bottle of cement and another $35 in PVC pieces, I built the plumbing seen here.

I ended up having to use soft vinyl tubing for all drain and return lines; my actual free space under the stand make hard lines too difficult to assemble. I wasn't too thrilled with the soft hose until I had to make a few adjustments and realized how modular and easy it was to make a change.

The UV Sterilizer has not yet been mounted. Additionally, the alge scruber will have to be redesigned as the change in plumbing reduced the free space for the scrubber.

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The drip plate works very well. There is about an inch of standing water on top of the plate at all times. I have monitored this closely and the level never falls nor rises. It looks to me as though the sump is in perfect equilibrium.

Overall, the assembly went very well. Things are working as expected, and there were no leaks or other problems during the setup and testing.

I'll post another update once the tank has completed the cycle.

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Thanks Vass - you'll have to stop by and check it out once I get it stocked with the Festae.

As far as flow....it's hard to say what my actual flow is. The Quiet One 4000 pumps are rated at 725 GPH at the head height of my setup (a little over 4 ft). Both pumps are running wide open, and they are not surpassing the flow rate of the twin 1" drains. The spigots used on the drains is actually restricting to 7/8", meaning I should be seeing a maximum of roughly 525 GPH per side. My overflows suck a little less than 20% air through the drain hoses (based on the air to water ratio in the drain tube during operation), which means that I'm getting roughly 850 GPH turnover total through the drains.

As both pumps have an estimated combined flow of 1450 GPH at the head height and I'm guessing I'm seeing half of this, I'm going to guess that the 1017 GPH rating on this pump is a bit "optimistic". In comparison to the Mag 9.5 on my 90gal reef tank, it seems that the mag pump is moving more water than the QO4000 pump at a head height of 4 feet. I haven't done any true scientific testing of this...these are just my observations I've made over the past few weeks.

This really isn't a huge surprise to me; the Mag 9.5 is rated a lower flow but is still using almost twice the wattage of the QO4000. Being that both pumps are of a similar design and the mag drive pumps are pretty close to the rated values, I just can't believe that the QO pumps are really that energy efficient. None the less, they are considerably quieter than both the Mag 7 and the Mag 9.5 I have, and the price was hard to beat. Still a good buy IMO.

So....in conclusion, I'm estimating a total flow of about 800 - 900 GPH. That's still a 4x turnover rate per hour, which I can deal with.
 
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