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Unread 07/12/2017, 11:45 AM   #2451
solitude127
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Quote:
Originally Posted by swk View Post
Google is your friend here. Specs are available for all models online
Got it. thanks


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Unread 07/12/2017, 02:47 PM   #2452
Jlentz
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Quote:
Originally Posted by swk View Post
I ran my last tube for 13 months and it looked fine honestly. Normally I shoot for every 4-6 months. But I have a 10-600 rpm drive and run it pretty low.


I've been pushing mine for about 6 months now. I'm curious if anyone has done any tracking to see exactly how long the pharmed ls17 tubing will last.


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Unread 07/12/2017, 11:46 PM   #2453
tkeracer619
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Well it's rated for something like 10,000 hours but that is at a higher RPM than we use.

There is no reason to push it, tubing is cheap, enjoy the reliability!


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Unread 07/13/2017, 09:48 AM   #2454
Cprice515
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So, with no budget, what new model would someone recommend?

I have around 2,200g total volume and am starting to add more LPS and SPS so will be needing to get my calcium rx up and running soon.


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Unread 07/13/2017, 02:39 PM   #2455
tkeracer619
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EW-07522-20 drive

and

EW-77200-60 pump head

I would probably give them a call if you're going to buy new and see if you can get a discount.


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Unread 07/13/2017, 05:53 PM   #2456
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Quote:
Originally Posted by tkeracer619 View Post
EW-07522-20 drive

and

EW-77200-60 pump head

I would probably give them a call if you're going to buy new and see if you can get a discount.
+1. That is the newer version of the pump I have. Nearly identical. It's a great pump!


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Unread 07/14/2017, 02:00 PM   #2457
krazysvede
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Any one using a 7550-60? Have a buddy that ended up winning 2 off eBay. He hasn't set either up yet so I haven't seen it in action. Thinking about picking up the spare, time to start reading...


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Unread 07/14/2017, 08:57 PM   #2458
SkyReef
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Double-Stacked Pump Head for Separate Dosing?

If I stacked a second pump head on my Masterflex pump, could I dose something else, in addition to calcium reactor effluent? Or does it get too weird dosing different liquids from the same pump, set at the same RPM? I got the second pump head, already. How should I use it? Thanks for your thoughts.


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Unread 07/14/2017, 10:32 PM   #2459
slief
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Originally Posted by SkyReef View Post
If I stacked a second pump head on my Masterflex pump, could I dose something else, in addition to calcium reactor effluent? Or does it get too weird dosing different liquids from the same pump, set at the same RPM? I got the second pump head, already. How should I use it? Thanks for your thoughts.
You could but the problem is, what ever you are dosing would be dosed at the same rate as your calcium reactor is fed. For most additives, the rate at which you would feed a calcium reactor would be way too much for dosing.


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Unread 07/14/2017, 10:38 PM   #2460
SkyReef
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Quote:
Originally Posted by slief View Post
You could but the problem is, what ever you are dosing would be dosed at the same rate as your calcium reactor is fed. For most additives, the rate at which you would feed a calcium reactor would be way too much for dosing.
My thoughts exactly! Oh, well...


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Unread 07/15/2017, 04:00 AM   #2461
Bpb
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I wonder if someone could give me some pointers. I've been running a GEO 618, masterflex, and dual stage regulator for 6-8 months now. I enjoy the quality of the gear but I still just don't seem to have a handle on tuning it. Sps bioload is small to moderate but really starting to take off. To the point that if I don't touch the reactor, my alk will drop about 0.4-0.5 dkh per week at my previous setting.

Right now I am running at 42 rpm, with my regulator at 15 psi, and I get about 1 bubble every 4-5 seconds. The ph in the reactor is fairly high at 7.25. Reborn media.

Now...I ran the ph even higher at 7.35 and 1 bubble per 8 seconds, and when things started growing noticeably, daily, the dkh began dropping.

My problem now is I cannot seem to get my adjustments to hold still. Even a literal hair turn of the needle valve will cause my alk to shoot up 0.5-1 dkh over a 1-2 day span, and I'll have to back it off a hair and it'll drop again. I can't seem to figure out how to make small enough adjustments to just get my alk to hold still. Every tiny adjustment I make in the co2 seems to cause a knee jerk shift in alk.

I don't think I'm understanding the concept of tuning and adjustment. I don't think I can run my effluent slow enough to use a 6.5 ph inside the reactor without nuking the tank. Someone help with my tuning and adjustments please


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Unread 07/15/2017, 08:08 AM   #2462
ClownsRCoo
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Try to do the hair turn of the co2 that causes the alk to rise and then do the final tweaking with the master flex by bumping that up 1. Wait and see if that levels off and if not bump it up one more. I would just try to do the fine tuning with the pump now to see if you can get it stable


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Unread 07/18/2017, 01:41 PM   #2463
greengeco82
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Is this LS17 tubing? Is this tubing meant to go into the pump head, or just between the reactor and tank? http://www.usplastic.com/catalog/item.aspx?itemid=25534


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Unread 07/18/2017, 01:44 PM   #2464
slief
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Originally Posted by greengeco82 View Post
Is this LS17 tubing? Is this tubing meant to go into the pump head, or just between the reactor and tank? http://www.usplastic.com/catalog/item.aspx?itemid=25534
Yes, That is the equivalent of LS17 tubing and it's used in the pump head. Most of us adapt that tubing to 1/4" RODI style tubing to connect between the tank and the pump and the reactor and the pump.


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Unread 07/18/2017, 02:04 PM   #2465
hkgar
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Tank PH shut off

Curious is anyone has a command line in your programming to shut down the reactor if the tank ph drop too low - less than 7.8 or there abouts?


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Unread 07/18/2017, 02:04 PM   #2466
greengeco82
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20170718_124617

Just picked these both up as a package deal for $450. Pretty good deal right? I'm going to take what I need and sell the rest. What should I keep? Easy Load or Easy Load II? One or two heads? Really dont think I need 4. The setup on the right or left? Surprisingly the setup on the left has a noticeably louder humm. The one on the right is pretty quite. Probably not too big of a deal once inside my cabinet.

I was thinking of running two heads into one so I can run the motor at a lower RPM. Thoughts?
Left setup is 7524-50. Right is 7553-80 with 7553-71 controller.

Just noticed these are only 1-100 rpm units. Problem?

Thanks Sleif for the previous answer.


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Last edited by greengeco82; 07/18/2017 at 02:23 PM.
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Unread 07/18/2017, 02:12 PM   #2467
vhuang168
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Quote:
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Curious is anyone has a command line in your programming to shut down the reactor if the tank ph drop too low - less than 7.8 or there abouts?


Yes. I do.


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Unread 07/18/2017, 04:40 PM   #2468
slief
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Quote:
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Curious is anyone has a command line in your programming to shut down the reactor if the tank ph drop too low - less than 7.8 or there abouts?
I do.


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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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Unread 07/18/2017, 06:27 PM   #2469
Stickboy97
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Just joined the club!!! Picked up a 7550-30, but it doesn't have a pump head. What models should I start looking for? I know from reading this thread 7518 is a good model that uses the L17 tubing.... what other models should I be on the look out for?
thx


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Unread 07/19/2017, 07:18 PM   #2470
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Disregard, got one.


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Unread 07/19/2017, 08:27 PM   #2471
GXPKY
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Anyone know if the 7523-00 is brushless? Or the rpms on it? I know the 7523-60 is brushless but cole parmer doesn't list the 00 on its site.

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Unread 07/19/2017, 11:47 PM   #2472
Jonnywhoop
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I have having an issue with co2 bubble accumulation at the top of my reactor. I believe my slow flow contributes to the co2 accumulating too easily.

5ml, 2psi, 10 seconds a bubble for a 10g, 7.5g sump system.

My system is sort of stable but I believe the gradual bubble accumulation is affecting effluent and it's nutrients.

What is the best way to increase my flow throughout the system without nuking my tank?





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Unread 07/20/2017, 01:36 AM   #2473
michael.lemke
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Quote:
Originally Posted by Jonnywhoop View Post
I have having an issue with co2 bubble accumulation at the top of my reactor. I believe my slow flow contributes to the co2 accumulating too easily.

5ml, 2psi, 10 seconds a bubble for a 10g, 7.5g sump system.

My system is sort of stable but I believe the gradual bubble accumulation is affecting effluent and it's nutrients.

What is the best way to increase my flow throughout the system without nuking my tank?





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Raise the ph in the chamber.


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Unread 07/20/2017, 03:00 PM   #2474
Stickboy97
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Have the new unit, pump headed & material from USPlastics coming next week... now I need to get the threaded rod to mount the head. Way back in the thread there is mention of 8/32 threaded rods, is this standard for all Masterflex pumps? About 3 1/2"?


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Unread 07/21/2017, 10:38 AM   #2475
Jonnywhoop
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Raise the ph in the chamber.


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To raise my ph - I would slowly up my masterflex mL up which would give the co2 less time to saturate the media correct?

My alk numbers have been solid for a bit now, what are my other consequences of raising my flow to say 10mL, coming from 5ml where it's at currently?


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