nuxx
.Registered Member
Interesting I was thinking of doing 2-3 gallons a day.
Would that mean up to 3 hours?
automatic water change
- Thread starter DRThompson
- Start date
Interesting I was thinking of doing 2-3 gallons a day.
Would that mean up to 3 hours?
msderganc
New member
I just tried it out in Fusion, and the shortest it would let me go (changing 11356 ml - three gallons) was 2h20m.
nuxx
.Registered Member
Not horrible, could stagger it at night...
The run time on the pumps is pretty high when I was talking to Neptune. Should work for a while
So you're saying on a few gallon change the difference in an out is negligible?
msderganc
New member
Not horrible, could stagger it at night...
The run time on the pumps is pretty high when I was talking to Neptune. Should work for a while
So you're saying on a few gallon change the difference in an out is negligible?
Yeah, and you can calibrate them. So I calibrated before installing, and then again after it was installed just to make sure and account for head pressure, etc. You basically just hit a button in the program and put a graduated cylinder (provided in the package) under the output. It'll put out about 40ml of water, and then you type in how much it actually put out. The Apex then calibrates the DoS to that amount.
nuxx
.Registered Member
Ah that's awesome and pretty idiot proof...
AquamanE
Active member
Reel-you definaetly have new choices now with DOS, but their is certainly nothing wrong with the LMIII as an option.
mrx66699
New member
LMlll is dead silent you have to put a hand on it to even know it was on ......and it is not limited on smaller than 7mil dosing or continous runing .....definitely things to consider. ..if your looking for a wc system or a system that can double as a doser or be setup as an auto top off or monitor your rodi setup and refill storage containers or turn on and off your rodi you have every option like this all within .....its not just a wc pump
FREAKING TORN ON WHICH WAY TO GO! I have a Apex so I would love to use the DOS, but I'm also using Litermeter's stand alone pump with my apex for my auto top off and it is dead silent and works perfectly. I was ready to pull the trigger on the Litermeter 3 until the Dos came out .....
Zaffor
New member
Well i figure its about time for me to chime in. Thanks Dave and Eddie for all the great info - and Dave for answering my questions on the phone.
I had initially purchased a stenner at a great deal to setup my own AWC but then ran into the info on the DOS. I (being a gadget addict) had to get one. I set it up in my closet along with a 90gal container. Like Dave - i ran my lines through the attic and dump the old salt water into a pvc drain i had access to inside a wall. I used PEX tubing instead of PE because it is supposed to be a little bit more resilient. The only hiccups so far was:
1 - the initial priming of the lines took forever! (It primes/manual doses at a very slow rate)
2 - i setup both lines as the pump indicates for forward motion - but in fusion AWC wizard it wants one pump to add and one to remove - so the second pump runs backwards. I had to switch my lines after the first night where it didnt pull any water out.
The interface is very clean and it actually logs the water that goes in/out. I have to call neptune to ask them how i can run the calibration check if i wish to do so on the second pump since it is plumbed for reverse pumping and the calibrate pumps forward. I am on duty tonight so didnt get to see it in action but I will look again tomorrow. I have it change about 1.4 gals each night while my salt water mixing pump is on. It runs quiet and the interface automatically decides how long and how fast the pumps spin.
Here are some initial photos i took for my build thread.
I had initially purchased a stenner at a great deal to setup my own AWC but then ran into the info on the DOS. I (being a gadget addict) had to get one. I set it up in my closet along with a 90gal container. Like Dave - i ran my lines through the attic and dump the old salt water into a pvc drain i had access to inside a wall. I used PEX tubing instead of PE because it is supposed to be a little bit more resilient. The only hiccups so far was:
1 - the initial priming of the lines took forever! (It primes/manual doses at a very slow rate)
2 - i setup both lines as the pump indicates for forward motion - but in fusion AWC wizard it wants one pump to add and one to remove - so the second pump runs backwards. I had to switch my lines after the first night where it didnt pull any water out.
The interface is very clean and it actually logs the water that goes in/out. I have to call neptune to ask them how i can run the calibration check if i wish to do so on the second pump since it is plumbed for reverse pumping and the calibrate pumps forward. I am on duty tonight so didnt get to see it in action but I will look again tomorrow. I have it change about 1.4 gals each night while my salt water mixing pump is on. It runs quiet and the interface automatically decides how long and how fast the pumps spin.
Here are some initial photos i took for my build thread.
msderganc
New member
In my opinion, it depends on your application. Both seem equally precise, and well built. The Neptune has more control, but the LM3 is a lot quieter. The LM3 can be placed anywhere, but is more expensive.
If I were doing it again, I like the DoS units for two-part dosing, but I probably would have gone with the LM3 for my AWC due to the noise.
I think your issue may be this - everything I've seen on Neptune's forums indicates that the pumps should both be going forward. Could you just swap the lines? My programming in Fusion just has them both "adding" water.
DRThompson
2018 FMAS President
Thanks Zaffor for the write on the apex DOS!
Zaffor
New member
Here is a short video of the DOS operating at mac speed. Im giessing that if you spread the water change over several hours it might run slower and quieter, but I wanted it to run over a shorter period to keep an eye on it.
Its definately not quiet but not bothersome with the door of the closet shut. My salt container mixing pump runs during the same time.
http://youtu.be/kUUQTPC2Z94
Its definately not quiet but not bothersome with the door of the closet shut. My salt container mixing pump runs during the same time.
http://youtu.be/kUUQTPC2Z94
AquamanE
Active member
Very nice Zaffor. Thanks for the input. It is indeed awesome to have another option now with the DOS.
I have also been hesitant to run it while not at home. At first ide do the 2.5 gallon water change while i knew ide be home at 6pm.
Once i saw things worked fine, I now do 1.25 WC at 6am, and then at 6pm. Something to consider so pump isnt working so hard. Mind you i wake up at around 6am and get home before the 6pm, so i am almost always at home while WC's are happening.
SpectraPure
.Registered Member
Eddie you sure are a trooper! I commend your valor! LoL This Dos sounds pretty good. I was suggesting that we add a graduated cylinder to our build about a year ago. Also I hope these pumps work out for you long term. If you find that they do not our pump assembly can be installed into their set up. While they will tell you not to. If you find that those pumps are not reliable, there is an option for you Dos Apex users to integrate our proven reliable pump into their setup. I do imagine that it would negate the warranty.
It seems that the first competitor to have a calibrating function only took a decade. Does anyone else have the problem that you don't know if your Liter Meter 3 is on because of how annoyingly quiet it is? Such a pain...have a good weekend everyone, and if anyone has any technical questions of any kind please let me know.
Also I have designed a direct ATO for people who cannot have a separate reservoir out side of their sump, but who do have room to mount a rectangular reservoir above there sump.
I also am curious what the flow rate is on those Dos pumps?
How high they can pump?
Can they pump accurately if one line goes up 6 feet, and the other line travels on a level path, or even a downward path?
What is the minimum and maximum amounts it can pump accurately?
Also when and how long the tubing lasts when the first person has to replace it?
For anyone who has asked me for the deal from before the offer still stands. Also Liter Meters are 10X reward points right now. That is a total of 26.99 in reward points, free shipping, and I will throw in a 500ml bag of phosphate media removal, and a 500 ml bag of carbon for your reactors.
Good night Florida!
Let me know if any schools or projects you have are coming up. I am always very happy to donate to your proactive club!
=P eace
Jeremy
It seems that the first competitor to have a calibrating function only took a decade. Does anyone else have the problem that you don't know if your Liter Meter 3 is on because of how annoyingly quiet it is? Such a pain...have a good weekend everyone, and if anyone has any technical questions of any kind please let me know.
Also I have designed a direct ATO for people who cannot have a separate reservoir out side of their sump, but who do have room to mount a rectangular reservoir above there sump.
I also am curious what the flow rate is on those Dos pumps?
How high they can pump?
Can they pump accurately if one line goes up 6 feet, and the other line travels on a level path, or even a downward path?
What is the minimum and maximum amounts it can pump accurately?
Also when and how long the tubing lasts when the first person has to replace it?
For anyone who has asked me for the deal from before the offer still stands. Also Liter Meters are 10X reward points right now. That is a total of 26.99 in reward points, free shipping, and I will throw in a 500ml bag of phosphate media removal, and a 500 ml bag of carbon for your reactors.
Good night Florida!
Let me know if any schools or projects you have are coming up. I am always very happy to donate to your proactive club!
=P eace
Jeremy
SpectraPure
.Registered Member
It sounds that the two wires that are connecting the pumps to the board were soldered backwards. I would contact their technical support on this issue.
Jeremy
SpectraPure
.Registered Member
Reelredfish,
This makes perfect sense to use for Apex users. It is built around the Apex, and it is built by the same company. I am not trying to deter buying it, but not everyone has the financial status to purchase one and accessories.
However they do have an economy version.
Jeremy
SpectraPure
.Registered Member
msderganc
New member
Nah, they can pump in either direction based on your need. Some people have been using them to dose foods and then clearing the line.
To answer some of your other questions, the DoS goes from about 7ml per min to 250ml. The motor is a stepper motor, similar to what's used in 3D printing, rated for about a 33% duty cycle. I'm not aware of anyone replacing the tubes yet, but it's super easy to change them out. Neptune is claiming somewhere around 2500 gallon life I believe, varying somewhat with how fast it's dosing.
They also claim a 0.1 ml minimum dose. Mine is currently pulling about ten feet vertical and 60 feet lateral. I think they tested to about a 30 foot vertical, push or pull. After calibrating with short runs, I tested the long run and it was still accurate.
