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Unread 02/27/2018, 11:55 PM   #2751
Ucantwin
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Hello everyone. I'm in the market for a used Masterflex pump. I'm new to using a peristaltic pump so I find it hard to recognize a good deal. Anyone have or know of a good deal on a pump?


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Unread 02/28/2018, 03:06 PM   #2752
hkgar
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THere are plenty of references to the pumps that are best for reactors in this thread. Determine what you want and search around in Ebay for selling history to determine what is a good deal. What was a good deal 5 years ago has change a lot.


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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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Unread 02/28/2018, 03:52 PM   #2753
gdemos
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Quote:
Originally Posted by tkeracer619 View Post
Let me take a look tomorrow but I think you're head is fine. Some pump drives require what is called a "long shaft" pump head but I don't have any personal experience with them. If it was working fine before something funky is going on.
any luck uncovering info on "long shaft pump head"? it sounds like this (or somehow getting a bushing on the flywheel shaft would help.
-Greg


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Unread 02/28/2018, 06:49 PM   #2754
Ucantwin
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Is the masterflex 7520-40 a good pump?



Last edited by Ucantwin; 02/28/2018 at 08:50 PM.
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Unread 03/01/2018, 02:39 PM   #2755
hkgar
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Masterflex are great pumps. Is the 7520-40 a good pump? Does it do what you want in terms of flow? It is not brushless, if that is important to you.


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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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Unread 03/04/2018, 08:46 AM   #2756
jh2pizza
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This setup maintains consistency dead on. I have it set where my CA reactor is flatlines at 6.57ph.

Im running a GEO 624, Aquarium Plants regulator and a Masterflex on 250G system.

Its not keeping up. So am I better off increasing the flow rate a little or lowering my reactors PH? My tank PH hovers around 8. Dips a little at night.

I am just starting to switch the tank over to SPS.


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Current Tank Info: Oceanic 180 in wall, 100 sump, Geo Kalk Reactor, Tunze 9415 skimmer, Geo Media Reactors, Geo 624 CA Reactor
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Unread 03/04/2018, 08:58 AM   #2757
eric23
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Anyone seen these ? I emailed coralvue and they said they placed and order and should be available by april ? It's made to feed calcium reactors and run 24/7 and has an adjustable flow rate. I've seen some videos looks like it might be good especially at 250.00

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Unread 03/04/2018, 10:38 AM   #2758
tkeracer619
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Quote:
Originally Posted by jh2pizza View Post
This setup maintains consistency dead on. I have it set where my CA reactor is flatlines at 6.57ph.

Im running a GEO 624, Aquarium Plants regulator and a Masterflex on 250G system.

Its not keeping up. So am I better off increasing the flow rate a little or lowering my reactors PH? My tank PH hovers around 8. Dips a little at night.

I am just starting to switch the tank over to SPS.
You can adjust the PH lower.

You can also adjust both the effluent and gas delivery which will maintain the current ph. Often I will increase effluent flow 10% and also increase either gas pressure or bubbles per second by 10% as well. If the PH is where you want it then this is what I do, if you want ph a little lower then just increase the gas flow a little.


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Unread 03/04/2018, 10:41 AM   #2759
tkeracer619
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Quote:
Originally Posted by eric23 View Post
Anyone seen these ? I emailed coralvue and they said they placed and order and should be available by april ? It's made to feed calcium reactors and run 24/7 and has an adjustable flow rate. I've seen some videos looks like it might be good especially at 250.00

Sent from my Nexus 6P using Tapatalk
I know several companies are working on some continuous duty peristaltic pumps. I do hope they have taken into account that we need ball bearings in the motors and not brass bushings like most stepper motors come with. Also, hopefully they were able to keep the noise down, steppers are notoriously noisy.

Edit, looks like they did. Seems relatively quiet!

After watching a bunch of vids, they are always running fast, I wonder what the lowest speed is. I assume it's low but there is a slight language barrier. Hopefully this is a workable solution! Maybe I can convince BigBlueTang to order one for his reactor so I can get some hands on with it


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Last edited by tkeracer619; 03/04/2018 at 10:52 AM.
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Unread 03/04/2018, 11:18 AM   #2760
Bpb
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Anybody have word on when Geo will release theirs? I’ve heard rumblings and they confirmed it to a friend of mine who spoke with them at a trade show but no info on their website, forums, and they won’t answer my emails about it. I’ve loved my masterflex, but it looks like it is from the Vietnam war era, and is noisy as all get out. I really don’t have 2 grand to drop on a new brushless model but I want to keep this same level of consistent effluent


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Unread 03/04/2018, 11:20 AM   #2761
jh2pizza
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[QUOTE]Anybody have word on when Geo will release theirs? /QUOTE]

Not sure. I have not heard from Sedar forever. Didn't know he was working on it.


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Current Tank Info: Oceanic 180 in wall, 100 sump, Geo Kalk Reactor, Tunze 9415 skimmer, Geo Media Reactors, Geo 624 CA Reactor
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Unread 03/04/2018, 11:22 AM   #2762
jh2pizza
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Would one effect the overall PH of the main tank any more than the other? Running a higher PH in the reactor with higher flow rate versus maintaining the flow rate but lowering the PH?



Quote:
You can adjust the PH lower.

You can also adjust both the effluent and gas delivery which will maintain the current ph. Often I will increase effluent flow 10% and also increase either gas pressure or bubbles per second by 10% as well. If the PH is where you want it then this is what I do, if you want ph a little lower then just increase the gas flow a little.



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Current Tank Info: Oceanic 180 in wall, 100 sump, Geo Kalk Reactor, Tunze 9415 skimmer, Geo Media Reactors, Geo 624 CA Reactor
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Unread 03/04/2018, 12:28 PM   #2763
michael.lemke
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Quote:
Originally Posted by tkeracer619 View Post
I know several companies are working on some continuous duty peristaltic pumps. I do hope they have taken into account that we need ball bearings in the motors and not brass bushings like most stepper motors come with. Also, hopefully they were able to keep the noise down, steppers are notoriously noisy.

Edit, looks like they did. Seems relatively quiet!

After watching a bunch of vids, they are always running fast, I wonder what the lowest speed is. I assume it's low but there is a slight language barrier. Hopefully this is a workable solution! Maybe I can convince BigBlueTang to order one for his reactor so I can get some hands on with it


I sent BRS an e mail asking about it as well. They vary one product from the same company already. Maybe they’ll buy one to test out and decide to carry them or not based on the findings. I’m tired of my loud masterflex but love the consistency. I don’t want to drop 750 on a used pump to get brushless.


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Unread 03/04/2018, 10:28 PM   #2764
tkeracer619
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Quote:
Originally Posted by jh2pizza View Post
Would one effect the overall PH of the main tank any more than the other? Running a higher PH in the reactor with higher flow rate versus maintaining the flow rate but lowering the PH?
Nope, it's all the same. What effects the PH of your tank is the total amount of gas added to the tank. Either way, it's the same.

You can increase effectiveness and reduced ph output by adding a second media chamber.


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Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers.
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Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.
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Unread 03/04/2018, 10:33 PM   #2765
tkeracer619
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Quote:
Originally Posted by michael.lemke View Post
I’m tired of my loud masterflex but love the consistency. I don’t want to drop 750 on a used pump to get brushless.


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Several companies have contacted me regarding this stuff. I know a few out there are working to solve the issue of a reliable continuous duty peristaltic that doesn't break the bank. To make the product with a decent profit margin it either is going to cost a fair amount or suffer in various places.

Hopefully we can get a reliable option soon. There are a LOT of people out there who I have helped source pumps and many on this thread deserve a lot of credit for helping others out! The setup is awesome, I'm proud of the effort the community has put forward to keep it going and help out their fellow reefers!


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Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers.
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Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.
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Unread 03/12/2018, 02:40 PM   #2766
Kain
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How do you guys keep the tubing in place? I just picked up a 7523-80 and when running it with the pharmamed tubing noticed that it moves in the direction that I set (CW). I'm using about 12" of LS17 equivalent tubing.


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Unread 03/12/2018, 03:14 PM   #2767
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How do you guys keep the tubing in place? I just picked up a 7523-80 and when running it with the pharmamed tubing noticed that it moves in the direction that I set (CW). I'm using about 12" of LS17 equivalent tubing.
Your head should be designed for LS17 tubing. Not all are. There are some tabs on each side of the head where the tubing goes in and out that you adjust to pinch the tubing in place by sliding them down. They are referred to as occlusion.


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Unread 03/12/2018, 08:29 PM   #2768
tkeracer619
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If it is an easyload head use the tabs. If it is a standard load then I typically zip the two tubing sides together.

As slief pointed out the head must be designed for the right type of tubing.


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Unread 03/12/2018, 08:37 PM   #2769
Kain
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Thanks fellas. I did what Slief said and it’s working great. I should’ve gotten a masterflex sooner.


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Unread 03/12/2018, 08:51 PM   #2770
tkeracer619
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Awesome! They're great aren't they


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Current Tank:
Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.
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Unread 03/12/2018, 08:59 PM   #2771
Kain
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So far so good. The pH in my carx has been stable. I’ll be happy when I’m on my next business trip and I don’t see the graph just shooting up and down.


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Unread 03/12/2018, 09:01 PM   #2772
tkeracer619
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I used to work 10 days out of state, 4 home, 10 away, 4 home for about 2 years. It was critical that I had stable and reliable equipment. Part of that drove this whole setup.


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Unread 03/12/2018, 09:19 PM   #2773
Kain
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Exactly. I thought I could do the stream method but after about a week the stream would lessen. I travel at least a week a month, sometimes more, so this was necessary. It’s not cheap, but considering how much we dump in to this hobby, what’s another $400 to $1000.


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Unread 03/12/2018, 11:21 PM   #2774
zip70
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Originally Posted by Kain View Post
How do you guys keep the tubing in place? I just picked up a 7523-80 and when running it with the pharmamed tubing noticed that it moves in the direction that I set (CW). I'm using about 12" of LS17 equivalent tubing.
How much did you pay for that pump? if you don't mind. Thanks


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Unread 03/12/2018, 11:24 PM   #2775
Kain
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I paid $460 including shipping. The one I have is only 100 rpm.


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