Official: Masterflex Calcium Reactor Setup Thread

You'll have better luck posting a WTB ad on here and other national Reef forums. That way you get a unit you know is appropriate for our uses. And it's often cheaper than you'll find on eBay. I posted up an ad and had pump in hand literally one week later. Previously I had been drowning in eBay confusion and thread searching this and that model number seeing if it'll work


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swk said:
Hey Dan. What models are you selling?
Click to expand...

Hey what's up Shawn creeped on your thread man your tanks banging, congrats =)..

Don't want to deviate too much in this thread and get away from the main objective but It was a 77301-22 & 21 brushless unit and easy load 2 head. Original poster took it..

I have various others but I'm going to keep the one brushless unit I have left in case switch back from 2 part. brushed ones and one other brushless (for repair) will be going up for sale in a Fs thread soon..
 
I just set up a CARX using a Watson Marlow pump. I will obviously have to match alk consumption, but here's my pH graph. Can you tell when I made my last needle valve adjustment? Bear in mind that the unit got CO2 about 22 hours ago...
a9525c02e197813139d1201a8e809b61.jpg
 
My easy load 2 head rollers are clicking badly when I use brand new master flex brand tubing, but when I use the older slightly worn master flex tubing it is dead silent. What gives?


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Bpb said:
My easy load 2 head rollers are clicking badly when I use brand new master flex brand tubing, but when I use the older slightly worn master flex tubing it is dead silent. What gives?


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Click to expand...

Some heads are made for the softer precision tubing which is clear and others are designed for the heavier pharmed tubing which is beige. My guess is that you are either using the wrong tubing in your head or your head is getting tired and something is wearing out in it. Often though, the clicking is where the head connects to the pump motor. There is a key slot where the head and pump connect and the play between the two connections will generate a clicking noise as well. Some people wrap some Teflon tape on the tip of the pump head to thicken the key where it goes into the pumps slop to eliminate the slop. Others use a sticky tape like material to eliminate the slop.
 
Same tubing. Cut from the same length. It's the clear precision tubing matched to the head. I'll try some Teflon tape


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I had the clicking occur when debris was blocking the intake. Moved the intake line and it went away instantly
 
The clicking was with brand new tubing and line during a leak test on an empty reactor. Went away when I switched back to the slightly worn tubing, and continued to when a/b testing back and forth dry


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hey if anyone has a spare head thats the 7518-60 model or need a 77200-62 model, please contact me, I am trying to set up a auto water changer and need that 7518-60 head
 
I just picked up the MASTERFLEX pump and quick load head model 7021-20 from Dan.

It's a beauty!

I'm trying to figure out the right tubing to order for it. I was looking at this from page 1 of the thread.

I have a Lifereef CR2 with the quick disconnect fittings. The reactor feeds from the bottom, and the effluent goes out the top.

The tubing seems to be bigger than 1/4". I'm thinking its 3/8".

What fittings am I using to connect the pump tubing to the caRX ? Head. Hurting.

EDIT

Spoke to Jeff. Tubing is 3/8 OD and 1/4" ID

Figured it out.

Going to be nice to get away from valves for control.
 
Last edited:
Reel North said:
I just picked up the MASTERFLEX pump and quick load head model 7021-20 from Dan.

It's a beauty!

I'm trying to figure out the right tubing to order for it. I was looking at this from page 1 of the thread.

I have a Lifereef CR2 with the quick disconnect fittings. The reactor feeds from the bottom, and the effluent goes out the top.

The tubing seems to be bigger than 1/4". I'm thinking its 3/8".

What fittings am I using to connect the pump tubing to the caRX ? Head. Hurting.

EDIT

Spoke to Jeff. Tubing is 3/8 OD and 1/4" ID

Figured it out.

Going to be nice to get away from valves for control.
Click to expand...

Use LS 17 tubing. and the fittings needed are explained in the third post to this thread.
 
I have an older used 7520-25 pump with a 7018 head I purchased awhile back with the intent to use it on an Elliot Style frozen food feeder.....

Will this work for the purpose of feeding/pulling a calcium reactor? I already have the Geo 618, just considering whether or not I can use this Cole Parmer Masterflex pump for my needs.

Thanks
 
The pump should work, it is rated at 6-600 rpm. You will want to use L17 tubing and the head needs to be rated for that tubing. The head model should, like the pump, have two more numbers 7518-XX.

Visit www.coleparmer.com to look up the head.
 
Hello everyone,
I've decided to sell my 7523-70 masterflex, easy load LS 7518-10 head, about 20' of LS 17 tubing, plastic nipples, and some rigid masterflex tubing.

The pump operates just fine, but does have a slight, high pitch squeak. I'm not sure what from.

low (1-100) rpms.

If anyone is interested please PM me.
 
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