MRC Club

<a href=showthread.php?s=&postid=10450217#post10450217 target=_blank>Originally posted</a> by WeeJ
Hi All - Looking for MR-2 (Dual Injectors) pictures setups if possible.
Also do you have to use separate pumps or the same one will do fine ?

I use a genX pcx55. It is what Andy recommends. I have read on this thread that the genX pcx70 works better for dual injectors, but I don't think I would go that high unless I added a riser to the skimmer. Mine is the stock MRC2 height.
MRC2skimmerworking.jpg
 
SDguy you skimmer will work much if the line from the pump were put in the center of the becketts,it gives ballance water flow and higher skimmer output
 
<a href=showthread.php?s=&postid=10715260#post10715260 target=_blank>Originally posted</a> by RGibson
SDguy you skimmer will work much if the line from the pump were put in the center of the becketts,it gives ballance water flow and higher skimmer output

Yeah, I've just been too lazy to change it :)

I understand that it would make the pressure in the two becketts equal. But I'm not seeing how this will increase skimmer output (you mean skimmate?)?
 
Now it's coming back to me...IIRC when I was plumbing it, the plumbing wouldn't fit the way you are suggesting. I think the beckett's are too close together. What combination of fittings did you use? An upsidedown T with two elbows ends up being too wide, IIRC.
 
<a href=showthread.php?s=&postid=10715747#post10715747 target=_blank>Originally posted</a> by RGibson
cut down the two ells and the T will fit.

So basically cut off one leg of the elbow? As I recall, it was a significant portion that needs to be removed. Would this not interfere with gluing it into the T then with a short section of pipe?

...and actually, thinking about it more (at work, oops :) ) I'm not quite understanding the performance problem here. I get what you are saying, the second beckett has less pressure. But if I split them equally, the second beckett will indeed get more, but won't the first lose some? Net being equal? Thanks for the help.
 
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I came off the becketts with a 45 into a 90 into a tee for mine. It takes up a little more space and adds a little for friction, but it works.

I don't have any pictures of it at the moment, I went back to a single beckett at the monent. My Gen-X 70 fan and housing decided to grenade on me so I switched back to a single with a Gen-X 55.

Does anyone know where I can get a replacement fan and housing? I emailed Pacific Coast, twice now with no response. Nice customer service, I won't be buying their pumps again.
 
<a href=showthread.php?s=&postid=10716105#post10716105 target=_blank>Originally posted</a> by SDguy
...and actually, thinking about it more (at work, oops :) ) I'm not quite understanding the performance problem here. I get what you are saying, the second beckett has less pressure. But if I split them equally, the second beckett will indeed get more, but won't the first lose some? Net being equal? Thanks for the help.

Does no one have an opinion on this?
 
I believe you are correct. Furthermore, plumbing it the way mention will cause an immediate drop in head pressure as all the water will need to make a 90 degree turn. Plumbing it as you did is the correct way to make a T.

Regarding the ozone, you'll just need to retrofit the overflow valve on the waste collector. Either get some plastic window screen and cut a circle the size of the valve, or put some carbon in a littl;e media bag. Either way, it will force the air through the carbon on the way out.
 
Thanks....what about running the exit water through carbon. Since my skimmer is level with my sump, I'm thinking inside the sump to add an elbow pointing up, then laying large bag of carbon over that. But how much back pressure will that cause?
 
<a href=showthread.php?s=&postid=10722984#post10722984 target=_blank>Originally posted</a> by SDguy
Thanks....what about running the exit water through carbon. Since my skimmer is level with my sump, I'm thinking inside the sump to add an elbow pointing up, then laying large bag of carbon over that. But how much back pressure will that cause?

That is exactly what I do. I just bought a street ell, and dry fity it inmto the bulkhead pointing up. Then, at the top, I have a reducing fitting to make rather a "bowl". Here is where I lay a bag of carbon. Make no mistakes, it will create backpressure (my gate valve is wide open, and the water level is still a little higher in the skimmer than what I would like), but it forces me to skim a little wetter, so no harm, no foul.

For what it's worth, I know many people who do not run the effluent water through any carbon, as most of the ozone is degassed i the skimmer (so they claim). I am not willing to take that chance, though.
 
Yeah, I have a small sump...skimmer bubbles quickly enter the tank if I'm not careful, so I will definitely be running the water through carbon. Hopefully it'll cut down on microbubbles too :)

Thanks for the info/help.
 
OK, I got the ozone port from Andy. It's basically a T with a JG fitting on one part. Now, do I remove the air valve silencer, screw the T onto that, then attach the O3 input onto the JG fitting, and the silencer onto the third opening on the T? Or, does the T go first, with the O3 input in the JG port, and the needle valve on the third opening on the T?

I am assuming the beckett provides enough suction to not need an airpump on the ozone unit?
 
Is there such a thing as having too much of a skimmer for your current tank. My total volume is 200 gal. and I am running MR-3R with a Iwaki 55rlt. I just transfered my old 120 into my current setup over the summer. Since transfering I did loose quite a bit of corals and such. My load is just not as big as before but I am wondering whether my MR-3R is doing me justice. The tank is nice and clean and I do run filter socks...does this just mean I need to be patient and wait for the skimmer? I've seen others run their water line just above the box...heck I am just above the spears union to get it to skim. One thing I have wondered about in regards to the recirc models is how the 90's in the box are faced? Is there a rhyme and reason for positioning these things a different way. For instance, my 2 beckett 90's in the box are at a 45 degree angle facing the middle of the box while the recirc 90 is positioned directly in the middle of the two. Is this correct?
 
A velocity T3...which seems to cease up on me a lot now. At least with that pump it is external and I have been able to make adjustments to the flow via a true union. I have been tinkering around lateley and have found that if I rev the feed pump down to about half the output and keep the Iwaki at full throttle I am getting better results. I also reconfigured the output for the Iwaki using 1" spa hose and only 1 45 degree elbow. This has substantually increased the flow for the becketts. Who knows I may upgrade to an Iwaki 70 if I still am looking for more performance. If the feed pump keeps on ceasing I will be forced to use a mag 7 in sump but I will have to somehow add a ball valve or true union in order to throttle it down a bit.
 
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