Continuous duty Peristaltic Pump

Cole-Parmer. though not cheap but you don't want cheap. Ebay is a good place to look for rebuilt ones at a decent price.
 
sirreal63 said:
Cole-Parmer. though not cheap but you don't want cheap. Ebay is a good place to look for rebuilt ones at a decent price.
Click to expand...


Should I be looking for a particular model or ? I had looked at cole parmer but list of models is mind boggling.

The max it would ever need to do is 20 GPD. Thats the most my system has ever evaporated in a much drier climate then I am in now.

Thanks for the advice.
 
I think one of our long time members here uses a Masterflex 7520, but there is ahuge range of pumps out there.
 
Okay I will do some hunting around online and see what I can find. I will be checking this thread so if anyone else has a model or a suggestion I am open to it.
 
I would also recommend looking for a used Buchler Polystaltic pump on Ebay. I've gotten several for under $100 and they work great and are continuous duty.

FB
 
I scoured ebay and could not find any nice digital Cole parmer. I did look at the Buchler but those seems very old school and not easy to find parts.

If I get a cole parmer at least parts are easy to get.

Looked at some new ones and thats simply nuts for what I am using it for. Not saying I wouldn't but thats a lot of money to be used to control a drip from a reactor.

Am I missing something on ebay or do these come and go frequently?
 
They come and go but they are not cheap. If the tank is small and the investment small it doesn't always make sense, but when the tank and investment are large it is a small price to pay.
 
Did someone say TKERacer619? On the scene. Let me do some digging for you. What are you comfortable spending?

The only question I have for you is what does this mean? Why are you associating evaporation with a calcium reactor? Is this for a kalkwasser reactor top off or a reactor with media and a co2 bottle?

The max it would ever need to do is 20 GPD. Thats the most my system has ever evaporated in a much drier climate then I am in now.
Click to expand...
 
tkeracer619 said:
Did someone say TKERacer619? On the scene. Let me do some digging for you. What are you comfortable spending?

The only question I have for you is what does this mean? Why are you associating evaporation with a calcium reactor? Is this for a kalkwasser reactor top off or a reactor with media and a co2 bottle?
Click to expand...


Hey I was hoping you would jump in....

This is for my CA reactor.... I was looking at my Kalk stirrer when I typed that..... So good catch on your part.



I did buy a unit off off Ebay http://www.ebay.com/itm/330700388282#ht_500wt_948 that has the ability to accept these tubing sizes.

L/S® 13, L/S 14, L/S 16, L/S 25, L/S 17, L/S 18


I was able to talk him down 100$ from $399 to $299 which made it more then reasonable. I am also going to keep my eyes open for a newer Digital one. Then this will become my backup.
Which one would you recommend for me to use? Which size will best feed the GEO 818.

Thanks....
 
What sort of demand are you getting now? Do you have a pump already feeding the reactor? If so can you measure your current effluent rate for me? Also is the tank grown out or is it a bunch of frags? For that reactor I am almost sure you are going to want to stack a second or maybe even a 3rd pump head onto the drive.

Good drive/pump, looks like it is in great condition. Ebay wouldn't let me look at the ended auction like normal but I was able to get a full size pic. Looks pretty good. If you want a refurb digital pump I might be able to point you in the right direction but tbh I wouldn't worry about it for now. Enjoy the pump you have. You really shouldn't need a backup.
 
tkeracer619 said:
What sort of demand are you getting now? Do you have a pump already feeding the reactor? If so can you measure your current effluent rate for me? Also is the tank grown out or is it a bunch of frags? For that reactor I am almost sure you are going to want to stack a second or maybe even a 3rd pump head onto the drive.

Good drive/pump, looks like it is in great condition. Ebay wouldn't let me look at the ended auction like normal but I was able to get a full size pic. Looks pretty good. If you want a refurb digital pump I might be able to point you in the right direction but tbh I wouldn't worry about it for now. Enjoy the pump you have. You really shouldn't need a backup.
Click to expand...

A little background. This is going on my new 650 gallon display tank. The corals that will be included collectively consume 325 ml of each ESV 2 part component daily. Add to that 1300 lbs of Rock actively growing corralline and I think the load will be decent.

This will be the first pump I've ever used on this reactor. It will be paired to the electronic CO2 regulator from aquarium plants . com.

Tank ATO is Kalkwasser if the PH is less than 8.3 or if above 8.3 regular RODI.

Please let me know if this helps.

Yes I would be interested in a digital unit as well this pump would not go to waste...

When you say stack heads, I'm assuming you mean more easy loads out front. Will I not be able to just use a large tubing? The drive is setup at 6-600rpm. I suppose for noise issues the slower it turns the better...

Please advise...
 
Go to ColeParmer's website and research heads and compatible tubing sizes. You will find your answers there. I have 5 CP pumps all different speeds etc...did not buy them based on RPM, but bought heads and tubing to compensate the correct volume.

I run a GEO 624 off of an old Cole Parmer with RPM range from 20-600. I have the nob set on 2 (1-10) and that's an unbroken effluent stream through CA Reactor.

Can't remember what head or tubing size I'm using. Most heads will fit multiple tubing sizes and you will find a combo that will work. Get a head that fits various tubing sizes...you will see on ebay what the most popular ones are and they will typically work.
 
I would go with L/S 18 on a single head and see if that gets you where you want to be.

Here is a chart that will show you the tubing inside diameters. CP considers it proprietary so you won't find an official listing.
http://masterflexpumps.com/L-S-pt.php

I think you are going to end up stacking a second head on to reduce RPM. This is about tube longevity and a little about noise but mostly tube life. Try it out, the pump will absolutely supply enough flow with 1 head. If you find you want to add a second head you would just cut rpm in half.

You want to use Tygon tubing. I use the phar-med tygon from us plastics but I don't think they have one that corresponds to the LS 18 spec.

I use 2 heads with LS 17 tubing. Pump spins at 25rpm. Never had a tube break but they seem to wear out around 3 months. With 1 head it would last around 1.5 months. I think you can stack up to 4 heads onto the pump you have should you need it.
 
tkeracer619 said:
I would go with L/S 18 on a single head and see if that gets you where you want to be.

Here is a chart that will show you the tubing inside diameters. CP considers it proprietary so you won't find an official listing.
http://masterflexpumps.com/L-S-pt.php

I think you are going to end up stacking a second head on to reduce RPM. This is about tube longevity and a little about noise but mostly tube life. Try it out, the pump will absolutely supply enough flow with 1 head. If you find you want to add a second head you would just cut rpm in half.

You want to use Tygon tubing. I use the phar-med tygon from us plastics but I don't think they have one that corresponds to the LS 18 spec.

I use 2 heads with LS 17 tubing. Pump spins at 25rpm. Never had a tube break but they seem to wear out around 3 months. With 1 head it would last around 1.5 months. I think you can stack up to 4 heads onto the pump you have should you need it.
Click to expand...

that's crazy talk. been running same piece of tubing for 6 months on one head at full stream with very little visible wear. you don't need 2 heads. waste of money.
 
I am sure I could stretch it out for 6 months as well but I work out of state 10 days at a time twice a month. Its like a few bucks a foot. Am I really that crazy for changing it out as part of my regular maintenance in order to be sure I have fresh tubing?

I think risking running the same tube for 6 months is crazy when were talking about 5 bucks a year vs 10. And no 2 heads is not a waste. They are cheap.
 
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