MTC skimmer club!

Well, maybe I was wrong and to quick to judge. Based on what I saw last night there was a lot of turbulence up top the skimmer like I had normally seen before adding the extension.

This morning on my normal checks that turbulence has settled down completely and looks normal now. So, maybe that extension did help. I'll have to keep an eye on it and observe over the next couple weeks now. I was just going to leave it running for a few days expecting what I experienced before. But now if it keeps reacting the same as it is this morning that's great.

I do not expect an increase in skimmate production which I've long past stopped caring so much about after hitting what seems like a limit of around 6 to 8 cups per day of dry sticky goodness. But what I would like more and more of is better aeration. I'll have to look back but previously the 784 had a slight decrease in pH which I believed was because of the flow rate being to high and not getting enough contact time. So, over the next couple weeks I'll see how the pH reacts over time. This morning pH is .06 higher then it was yesterday morning. That's a pretty significant (though extremely small amount) increase in pH just after changing that mazzei out.

Will see what happens and see if this morning is a fluke or not. If instability is created then the slight gain in aeration is not worth it.


.06 pH increase over last night's low. 2 pH probes to confirm each other's readings.
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Kept spot checking last night and again this morning. I also shut it down and back on a few times.

With the 784 mazzei and my new skimmer's height it seems like right after start up the turbulence is quite a lot. Except, with the extension now it seems to be able to settle down with in an hour or so. Very interesting.

pH is definitely boosted counter to the previous run with the 784. Crazy what just going from 36" to 42" can do. I would definitely say if using a taller 48+" the 784 maybe worth a try. 36" the stock 684 seems perfectly balanced.

Will keep watching but happy to see pH boosted again.
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After cleaning my MVX with 684 and standard head today I happened to remember this MTC skimmer club thread and decided to stop by to have a look see. You guys have been moving right along and doing some nice experiments. I'm still running the mag 12 on my MVX and I have to say that the past couple years has proven this little skimmer to be the most maintenance free and dependable set it and forget it skimmer I've used. If it wasn't for needing to clean the head and empty the waste collector weekly I might forget the MVX is running altogether. :)
 
I am using the Waveline 12000 and am considering going back to a Mag 12, I have two extras just laying aroound. The flow rate with the Waveline to be some what erratic. It will run fine on a setting for awhile than nest thing I know it is overflowing. I collect in a two liter bottle set inside a 1 gallon bucket and have often find the bucket full in the morning.
 
I just moved to trying out the DC pumps yesterday. I added two Vectra M1 pumps to my 120 reef with 100 gal sump. I added one M1 for the return pump replacing and old MD 30 RT Iwaki and the other M1 to run my HSA1000 skimmer replacing an old MD 55RLT. To my surprise the Skimmer required no adjustment at all to the gate valve and the skimmer appears to be running the same as it was with the 55RLT Iwaki. The M1 did increase flow to the tank but I have no flow meters hooked up so I can't show numbers. If the Vectra pumps last as long as the Iwaki's did I'm in a win, win, situation.

<iframe width="480" height="360" src="http://s38.photobucket.com/user/xyzgallery/embed/slideshow/HS1000"></iframe>
 
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Wouldn't count on it! A pretty high bar IME (had an Iwaki run continuously for me for 19 years).

That's about how long the Iwaki 55RLT that I replaced had been running. Used more than the 80 watts the Vectra M1 uses though so I'm hoping for lower monthly bills. We'll see how it goes.
 
I just moved to trying out the DC pumps yesterday. I added two Vectra M1 pumps to my 120 reef with 100 gal sump. I added one M1 for the return pump replacing and old MD 30 RT Iwaki and the other M1 to run my HSA1000 skimmer replacing an old MD 55RLT. To my surprise the Skimmer required no adjustment at all to the gate valve and the skimmer appears to be running the same as it was with the 55RLT Iwaki. The M1 did increase flow to the tank but I have no flow meters hooked up so I can't show numbers. If the Vectra pumps last as long as the Iwaki's did I'm in a win, win, situation.

<iframe width="480" height="360" src="http://s38.photobucket.com/user/xyzgallery/embed/slideshow/HS1000"></iframe>
Any picture of your skimmer working with the vectra?

Enviado desde mi HTC 10 mediante Tapatalk
 
Big fan of the HSA1000 ..... ran the original iteration for many years. Had the water feed tube down the center of the body and a sealed Beckett chamber. Former was Ok, the latter not so much.
 
Big fan of the HSA1000 ..... ran the original iteration for many years. Had the water feed tube down the center of the body and a sealed Beckett chamber. Former was Ok, the latter not so much.

MTC sells a conversion for the original HSA1000 that allows access to the becket for easy cleaning.
 
I just installed an Apex Flow sensor on my feed line to my MVX 36. Ithought me flow from the Waveline DC12000 was too low at max 190. Switched to a Mag 18 and only getting 174 GPH.

Whats going on? Any ideas? There are two 90 elbows on the exit line.
 
I just installed an Apex Flow sensor on my feed line to my MVX 36. Ithought me flow from the Waveline DC12000 was too low at max 190. Switched to a Mag 18 and only getting 174 GPH.

Whats going on? Any ideas? There are two 90 elbows on the exit line.
I'd be more curious about the air draw. Do you have the watts drawn for both too?

Is the waveline apex ready? If not it won't handle much more head pressure then the mag1800. I don't have flow numbers for the mag18 or waveline dc12000 but I do have air flow and watts drawn to compare to.

My dcp18000 with the mazzei 684 I do have flow rate for via apex flow sensor and got about 380gph. With the 784 about 390gph flow. But it also has near 30' head.

If you're concerned a vinegar soak of the pump and injector for several hours wouldn't hurt.
 
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I'd be more curious about the air draw. Do you have the watts drawn for both too?

Is the waveline apex ready? If not it won't handle much more head pressure then the mag1800. I don't have flow numbers for the mag18 or waveline dc12000 but I do have air flow and watts drawn to compare to.

My dcp18000 with the mazzei 684 I do have flow rate for via apex flow sensor and got about 380gph. With the 784 about 390gph flow. But it also has near 30' head.

If you're concerned a vinegar soak of the pump and injector for several hours wouldn't hurt.

I think my problem may be using the 1/2" flow sensor (I have a 1" on order). 1. It creates more back pressure from reduce from 3/4 to 1/2 than back to 3/4. 2. where I am using 1/2 tubing between 2 1/2" barb fitting I am getting pretty good kinks in the tubing, restricting flow. The skimmer is external to the sump.

Not sure the watts of the Mag 18 I think I remember seeing 40 on my Kill O Watt meter. The Waveline (which is not Apex ready) was 150 at full speed with 190 flow.

I can't re-check the Mag watts as I have the skimmer off line for a thorough cleaning. No I am having a terrible time stopping the two bulkheads fro leaking. To anyone considering taking one apart for cleaning, do not disturb the bulkheads. I should never have removed them.

When I place it back in service I am going to run PVC from the pump to the water inlet on the skimmer.
 
Ah yes, you need to go up and not down. That's extra preasure going down to 1/2" along with pinched tubing. I went to spaflex and sch40 pvc.
 
Hi everyone. Last week I got Jeff at MTC building me a custom 48" MVX. I'm really looking forward to joining the club!!! I've been following this thread and a similar one Jason started over on R 2 R. Very good info in both and I have some thought's on how I'm going to set up the plumbing to maximize performance.

My system is a 220DT with a 120 sump, I figure the total water volume is 265 gallons. The skimmer is going to run external.

I'm going to build a stand for the skimmer so it sits just higher than my sump, which sits on the floor in my basement, so the height at the base allows for the supply & return lines to clear the top of the sump. I'm going to be running a DCP-18000 pump that will be in the drain chamber of the sump. For the supply plumbing I'm going to come off the pump with 1-1/2" PVC and route it up and out of the sump then run horizontally directly to the inlet of the skimmer. I will step down the the PVC to 1" for a Neptune flow meter then attach the injector next a few inches before entering the skimmer base. The injector will be installed with the air inlet facing down, so whenever the pump is turned off water will flow through it. I believe that by using larger diameter pipe off the pump and the total length of the piping being 4.5' or less before the skimmer inlet it will greatly reduce the head pressure on the pump.

I just don't know how large of an injector I can get away with before it's supplying to much flow. I know Lifereef skimmers use a 1" Mazzei so I was thinking about using and 878, 885x or 978. There just very little info out there about sizing. I'm hoping I could get away with at least an 800 series. If so I can have Jeff set the inlet up to accept 1" pipe and use this Tee inside the skimmer. Going this route could push the water flow upwards of 500+gph and have an air draw over 40scfm.

Do you think going with a 1" injector will supply too much flow for this size skimmer or could one of the 800 series injectors be right in the sweet spot?
 
How's the noise on the MVX? I have a tank in a living room - I currently run a SWC 160. I'd really like to take the plunge but more noise would be a killer.
 
Late reply but it will be as loud as your pump. Mine is very quite with the jebao dcp18000
How's the noise on the MVX? I have a tank in a living room - I currently run a SWC 160. I'd really like to take the plunge but more noise would be a killer.
 
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