Bubble Magus BM-T01 and BM-T02 doser review

pascal32

New member
As part of my new build i order the new Bubble Magus Doser pump. During the summers weeks the flexibility of spending some time at the local parks camping is a big part of our family life. The other part of this is my wife - she is wonderful and will do anything to help - with that said I think she would be permanently traumatized if the tank crashed while I was on travel for work - with a dosing system she is abstained from any liability which is good for both of us! Unfortunately the reef tank can be a bit of a ball and chain - primarily for top-off and dosing. For peace of mind and the well being of the corals this is a must have in our household!

Currently I keep it simple and dose KH, Alk, Mg, and KoralKolor. As time goes on I might look into more advanced dosing such as Strontium.

I have an RKE and was planning on dosing using the 1.1ml pumps from BRS. To do this I would have to use one power port on the RKE. This equates to about $20 for the power port + $90 for the pump, totaling at about $110 per dosing pump. the BM-BT01 is less money overall and makes dosing.

The BM-BT01 is under $300 for three pumps showing a $30 savings which is increased by adding the BM-T02 add-on of 4 pumps at about $65/pump.

The price price difference in addition to the dedicated unit was enough to make the splurge worth it.

The unit arrived nicely boxed. Setup is as easy as it gets, plug in power and wait a few seconds for it to load.

I forgot to take a "normal" picture of the doser, so here are the pictures from the BM site:

primary unit:
970.jpg


secondary:
973.jpg



To setup:

(1) set the time
- press escape
- use the up/down buttons to select set time, press enter
- set the time using the up/down buttons for each digit and press enter

(2) connect lines
- I used standard air line tubing which seems to fit nice and snug
- input is on the left, output on the right

(3) prime the pump
- press escape
- use the up/down buttons to select manual control, press enter
- select the pump using the up/down button - pump 1,2 & 3 are on the primary unit, 4,5,6 & 7 on the secondary (I'm guessing an additional add-on would continue the trend)
- press and hold enter to manually run the pump till the air bubbles are out and the line is full

(2) configure pump for dosing
- press escape
- use the up/down buttons to select setup program
- use the up/down button to select 1-3 for the primary unit, or 4-7 for the secondary
- use the up/down to select the pump number
- set the ml/day using the up/down buttons for each digit and press enter. you can select from 1-1999 ml.
- set the cycles per day and press enter. these are based on the following table:

Dose amount (mL): Cycles/day
1: 1,2
2: 1,2,3,4
3: 1,2,3,4,6
4-5: 1,2,3,4,6,8
6-11: 1,2,3,4,6,8,12
12-160: 1,2,3,4,6,8,12,24
161-319: 2,3,4,6,8,12,24
320-479: 3,4,6,8,12,24
480-639: 4,6,8,12,24
640-959: 6,8,12,24
960-1279: 8,12,24
1280-1919: 12,24
1920-1999: 24

- set the start time (take note you can only select the start hour, press enter. the minutes are pre-determined based on the pump number). for example P1-:00 P2-:05 P3-:10 and so on.

*** NOTE - the pumps are forced to run one at a time to prevent mixing of chemicals.

-press esc to return to the main screen

testing:
To test I used a cup of RO/DI and a BRS 250ml flask. For each channel I put a 100 ml single dose and set the time so that it would run a minute after programming.

results for 100 Ml test on each pump:

1- 111 ml
2- 99 ml
3- 109 ml
4- 110 ml
5- 99 ml
6- 100 ml
7- 100 ml - 102ml - 102ml

* as a side not I found it interesting that the pumps are either 100 ml or 110 ml - I was expecting more of a distribution.

as you can see there is variance with each pump, though they seem to be fairly consistent between runs as noted with the multiple runs on pump 7. I have not tried a "head pressure" test, though I suspect the values will not change.

Overall impression:
The unit seems well made, though I'm not a fan of the buttons. Then again, hard to press buttons are a pet peeve of mine. The unit is very easy to use! The pumps are not quiet, but not overly loud either. I'm not sure I would want this in my bedroom, but in the living room with the TV it wouldn't be an annoyance like the automatic cat litter box by the kitchen is. The accuracy seems to be on par with the hobby pumps I looked at, though I'm not expert and have not seriously researched accuracy of dosing pumps. consistency is most important to me.

I also ordered the bracket and line holder - both are fantastic quality and are show-case worthy! WARNING - apparently when buying Bubble Magus pumps it is assumed you have a rimless sump - the bracket will only fit facing down, compared to the horizontal it is made for. this will not impact usage, just something noteworthy.

The only downsides are:
(1) although you can select cycles per day (within the limits of the table above) - you can NOT do a number of cycles within a time frame less than 24 hours - for example you can NOT say dose 100 ML 4 times between midnight and 6 AM. You have to spread the split doses of 24 hours
(2) my grip - calibration tables are not hard to implement - it would have been nice to allow the user to dose a set amount such as 100ml and put a correction value in to increase the accuracy.

overall review:
highly recommended!

English manual: www.fish-street.com/downloads/bmt01.zip

connecting the two units is a single wire for signal and power:

img3272small.jpg


installed in new sump:

img3274small.jpg


Bracket to hold dosing pumps:

img3273small.jpg


Line Holder:

img3275small.jpg
 
Thanks for the information... I have heard nothing but great reviews on this pump. I really like how you have it mounted, too! :)
 
those looks very nice and compact, thanks for all the details, wished i waiting a bit longer to acquire those instead :D

i like how they are stand along units, unlike my future system, a single point controller failure will cause choas on everything attached :)

...how about a video of them in action? :D
 
do you make your own Ca, Alk, Mg, and KoralKolor (KoralKolor?) supplements?

I'm using BRS right now for Ca Alk and Mg. I'm planning on going to Randy's recipe - just too much going on right now. The BRS pricing was low enough to take this route - couldn't imagine forking over the dough on the B-Ionic!

KoralKolor is commercial. The bottle isn't cheap, however the required dose is so low I can go for a long time on the $20 or so the bottle cost. On the 72 tank I dose 14 drops a day. I have noticed a color change for the better - primarily on the green LPS.

I'm funny about what I spend money - I don't mind high up front costs like the RKE and the dosing pump - however I try to minimize recurring costs like supplements and electric usage (hence the T5s).
 
So there are seven available heads on this system, you have accounted for four(Ill presume 5 allowing for an ATO) What are the other two heads going to be used for?
 
So there are seven available heads on this system, you have accounted for four(Ill presume 5 allowing for an ATO) What are the other two heads going to be used for?

I'm sure I'll find something :). Probably amino acids and or some other suppliments. That stuff is over my head right now, I'm still learning the basics!
 
will this unit retain the settings if the power goes off? this way we can put it on a timer to run on certain hours.
 
Great write-up on this! Definitely interested in dosing pumps. I am also curious to know what happens when the power goes out.
 
The doser has been unplugged since the writeup waiting for the new stand to get stained and poly'd

I plugged the unit in and the time was reset. I cleared the programs after I was done testing, so I don't have anything else to go on.

I did a 5 minute and 50 minute test, both of which retained settings including time.

Next up is the 12 hour test, I'll try to remember checking it in the morning.
 
Last edited:
thanks for checking on that. this unit seems great for the price.


No problem, forgot to do it this morning. Suppose it just turned into a 20 hour test!

Whre to buy- that's the tough part. I pur based from socal tropical fish soley on the basis their shipment was with us customs and they had a few unspoken for units. I also heard the price is going up.

Check around and call around. At some point their production should meet demand.
 
After 25 hours the programming was retained, however the clock reset.

I'm taking a guess that the programming is in NVRAM (non-volatile RAM - i.e. can store without power). However the clock needs power to keep ticking (same reason your computer has a battery for when it is unplugged).

It is possible that the BM is charging a battery to power the clock - if this is the case, then the test I ran is not fair since I had had the unit powered off for almost a week and only plugged it in for a few minutes.

Even if the clock resets, that is not a bad thing since it retains the dosing information. There is a chance of missing or getting an extra dose - can't blame the pump for that since it had no power.

I know the clock can endure an hour, I'm curious to see if it can do 12 which is a long power outage.

I'm leaving it plugged in overnight so if there is a battery that needs to charge it has a chance.

Unfortunately that means you have to wait till sunday :(
 
will this unit retain the settings if the power goes off? this way we can put it on a timer to run on certain hours.

regardless of the results from the power test, I wouldn't recommend doing this as it defeats the automatic distribution of dosing over a 24 hour period. I agree it would be nice to isolate a period of time to dose over.

Personally, I am planning on dosing KH and calcium around the clock since each dose will be fairly small.

Blurry - thanks for doing this. I think you got a bunch of us on the edge of our seat ready to bite.

happy to give back after receiving so much advice from the folks on the board!

anyplace to buy these?? I've been checking http://www.nuocean.com/bubble-magus-bmt-01-kit.html and they have been out of stock for a wile now

I ordered mine here, but it looks like the price went up quite a bit:
http://socaltropicalfishoutlet.com/catalog/bubble-magus-dosing-pump-3pump-p-385.html
 
power out testing:

The dosing settings are retained for what appears to be regardless of the length of power outage.

The clock keeps counting for more than 4, but less than 12 hours.

Like I mentioned before, I wouldn't let the clock worry me, the important part is the dosing settings and those seem to hold up to long term power outages.
 
Back
Top