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Old 10/27/2019, 07:10 AM   #3351
Mache62
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Quote:
Originally Posted by slief View Post
A Masterflex with LS17 tubing can produce upwards of 20 psi but unless the reactor is clogged or the output is restricted, there will never be much pressure inside the reactor other than the head pressure from the output to the sump.
So the 20 psi would be at the top speed of the pump though..correct? If so, then won't I always have an air issue when running at a lower delivery speed?

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Old 10/27/2019, 09:06 AM   #3352
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So the 20 psi would be at the top speed of the pump though..correct? If so, then won't I always have an air issue when running at a lower delivery speed?

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The +app 20 PSI would be after the pump. There could be as much as -20 psi on the intake side. And I donít think the PSI has anything to do with pump speed but I could be wrong. If you were to block off the flow through the pump, that would be max PSI that the head could achieve before the water would essentially not pass by the rollers.

Why would you have an air issue? As long as you arenít putting more gas in that water out or donít have any vacuum leaks if you are pulling then youíd never have a gas issue.

Either way, you are reading too much into it. Air in the reactor has nothing to do with PSI. It has everything to do with being leak free and not having more gas the going in then the amount of water going through. It is critical to purge all the air out before turning the Co2 on. That means running the reactor for up to 24 hours before you turn the gas on. It can help to shut the circulation pump off during that time. If you are using the pump to push, you can lean the reactor back and forth to guide the air to the circulation pumps intake in the top center of the reactor while running the Masterflex at a high speed. It also helps to shake the reactor back and forth to free the air that is trapped in the media and get it to rise. You may need to repeat this process several times. It will also help to leave the circulation pump off for several hours so itís not sucking the air that rises back though to be distributed back into the media.


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Old 10/27/2019, 09:49 AM   #3353
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@slief I have yet to turn on the gas! When I shut off the recirc pump the air sits in the line that's between the reactor and "out" side of the pump.
I have emptied and refilled the water in the rx chamber twice now and still cannot get rid of the air. I have a new Uniseal for the base of the reactor arriving today so I'll empty it once again and put that in and refill.
When everything is off I can see no air bubbles at any of the connection points that would indicate an air leak.


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Old 10/27/2019, 10:26 AM   #3354
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@slief I have yet to turn on the gas! When I shut off the recirc pump the air sits in the line that's between the reactor and "out" side of the pump.
I have emptied and refilled the water in the rx chamber twice now and still cannot get rid of the air. I have a new Uniseal for the base of the reactor arriving today so I'll empty it once again and put that in and refill.
When everything is off I can see no air bubbles at any of the connection points that would indicate an air leak.


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If your water intake is in a location of the sump with any micro bubbles, you will get air in the reactor so keep that in mind as you are trouble shooting. You might consider placing the pump before the reactor (pushing) at least temporarily as that would show you where the leak is assuming you have one that is inside the reactor as you will see the leak.


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Old 10/27/2019, 10:32 AM   #3355
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I am currently pushing the water with the peristalic pump but just came downstairs to the pump head leaking again. I have LS 17 tubing in there but maybe it's the wrong thickness? I dunno....I'm getting to the point of just going back to the old way and feeding with a mj1200 and dealing with having to fiddle with the effluent again. I really want to make this work but it's just getting to be too much. This is a pic of the tubing I'm using..

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Old 10/27/2019, 04:31 PM   #3356
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Any picture I have seen of tubing it is sort of ivory colored.
I will however wait for confirmation by someone with a Masterflex pump.


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Old 10/27/2019, 05:18 PM   #3357
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Any picture I have seen of tubing it is sort of ivory colored.
I will however wait for confirmation by someone with a Masterflex pump.
What you see there is the silicone tubing and not the Pharmed stuff. The Pharmed tubing is MUCH more durable and lasts MUCH longer where as the clear silicone stuff like heís using doesnít last long and tends to rupture easily. That head heís using isnít really designed for Pharmed tubing though I think some here use it in those heads. The Easy Load heads are better suited for the Pharmed stuff.

@Mache62 You might pickup a few feet of this stuff and see how it does in that head. Itís LS17 sized Pharmed tubing.
https://www.usplastic.com/catalog/it...x?itemid=25534


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Old 10/27/2019, 07:08 PM   #3358
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Ok well that's good info because this tubing is splitting very easily and I was careful when I loaded it.
Is there a better pump head you could suggest for my pump? It's a 7521-40 Master Flex.

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Old 10/27/2019, 07:16 PM   #3359
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Ok well that's good info because this tubing is splitting very easily and I was careful when I loaded it.
Is there a better pump head you could suggest for my pump? It's a 7521-40 Master Flex.

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7518-00 or 7518-10 are my preferred heads. Both are Easy Load Heads and support LS17 in addition to other sizes. The 7518-10 has stainless steel rollers.


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Old 10/27/2019, 07:20 PM   #3360
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Ok good. Thank you. That will also use the aforementioned tubing correct?

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Old 10/27/2019, 07:29 PM   #3361
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Ok good. Thank you. That will also use the aforementioned tubing correct?

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Yep. I use the Pharmed LS17 tubing in mine. Itís lasts several months or more and I run at about 65ml/min for my Geo 818 on a 700 gallon system. And glad to help.


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Old 10/27/2019, 07:53 PM   #3362
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Ok I found a couple on Ebay. Thanks again and I'll post back when I
I'm able to get one.

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Old 11/03/2019, 08:19 PM   #3363
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I found the suggested head unit on ebay and purchased the correct tubing. Wow, that tubing is really different from what I had. So I got it all set up and seems to be running well. The pH in the reactor is dead on with very little fluctuations. I had to switch out the co2 tank the next day so I'm futzing with the pressure and bubble count now.
But wow! What I difference!

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Old 11/04/2019, 02:33 PM   #3364
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Looks great! Do you have it hooked to a controller?


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Old 11/05/2019, 07:42 AM   #3365
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Thanks! Yes I have the co2 solenoid plugged into my EB8 currently.

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Old 11/05/2019, 09:12 AM   #3366
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Thanks! Yes I have the co2 solenoid plugged into my EB8 currently.

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I also use an Apex. Hope you have the program for the CO2 just set to shut off if ph drops below about 6.35 and not programing a range.


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Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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Old 11/05/2019, 09:59 AM   #3367
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I also use an Apex. Hope you have the program for the CO2 just set to shut off if ph drops below about 6.35 and not programing a range.
Hmm ok. Yea right now I have a range of 6.73 to 6.75 programmed in but I'll change it to just shut off then.

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Old 11/05/2019, 12:00 PM   #3368
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Hmm ok. Yea right now I have a range of 6.73 to 6.75 programmed in but I'll change it to just shut off then.

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When you do that the ph will probably drop to a certain level and than remain constant. You than either adjust the CO2 bubble count or PSI to get it to the ph level you want to maintain the dKH level in your tank that you want.
My program is:
Set OFF
Fallback OFF
If Output CAREACON = ON Then ON
If RXph < 6.35 Then OFF

CAREACON is a virtual outlet I use to control my masterflex pump and co2 regulator.
Set ON
If Output Leak_detect = ON Then OFF

Here is my PH over the last hour.


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File Type: jpg ph.jpg (30.9 KB, 18 views)
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180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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Old 11/05/2019, 12:40 PM   #3369
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What is the purpose of a virtual outlet? The VO controls 2 things at once?

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Last edited by Mache62; 11/05/2019 at 01:03 PM. Reason: added another question
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Old 11/05/2019, 01:50 PM   #3370
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What is the purpose of a virtual outlet? The VO controls 2 things at once?

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Yup, shuts down the mixing pump, flow pump and co2 reactor. I use it as a way to shut down the system all at one time if, in the rare event, the dKH gets too high and I want to bring it down or as the program show if one of the leak detectors activates.


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180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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Old 11/05/2019, 01:54 PM   #3371
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What is the purpose of a virtual outlet? The VO controls 2 things at once?

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Yup, shuts down the mixing pump, flow pump and co2 reactor. I use it as a way to shut down the system all at one time if, in the rare event, the dKH gets too high and I want to bring it down or as the program show if one of the leak detectors activates.

I have several virtual outlets.


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180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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Old 11/05/2019, 02:00 PM   #3372
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Yup, shuts down the mixing pump, flow pump and co2 reactor. I use it as a way to shut down the system all at one time if, in the rare event, the dKH gets too high and I want to bring it down or as the program show if one of the leak detectors activates.

I have several virtual outlets.
interesting...I have VOs but I generally use them for the power heads and night flow versus day flow. Guess I have some homework to do tonight!


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Old 11/05/2019, 02:13 PM   #3373
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I generally use them for controlling mutiple functions or units. MHCNTL as an example is where I program the on off light cycle so when I change the time I can do it in one place, not three.


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180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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Old 11/21/2019, 11:54 PM   #3374
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I'm a bit space constrained and can't easily fit one of the large masterflex models. I'm looking at one of the Miniflex models isntead -- HV-07525-40, but can't find any posts of anyone else using one. Any reason this wouldn't be a good option for a 130G SPS? It's only 300 RPM instead of the 600 RPM recommended earlier here, and doesn't take LS 17, would have to use LS 16 or 25 instead.


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Old 11/23/2019, 07:49 AM   #3375
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I'm a bit space constrained and can't easily fit one of the large masterflex models. I'm looking at one of the Miniflex models isntead -- HV-07525-40, but can't find any posts of anyone else using one. Any reason this wouldn't be a good option for a 130G SPS? It's only 300 RPM instead of the 600 RPM recommended earlier here, and doesn't take LS 17, would have to use LS 16 or 25 instead.
Looks like a cool little pump. I am sure it would work just fine.


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Current Tank Info: 480G display mixed reef, 90G sump, 90G refugium, 60G display refugium. Check out my build thread: http://www.reefcentral.com/forums/showthread.php?t=1783476
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