Way off stated value, and very loud By Barnaby on 6/12/2017
Barnaby wouldn't recommend this product to a friend
I bought three (3) 1.1 ml dosing pumps plus other miscellaneous items, received them promptly from BRS in good order, they were well packed. I calibrated them according to the instruction and their rates are 1.88, 1,85, and 1.79 (ml/min). So they are way off the stated nominal value of 1.1, I know I'm not buying/paying for a scientific instrument but that give me doubt on the manufacturer's QC, if they have one.
The other issue is they are all very loud! They started quite in the first minute or two, but ramp up to loud clicking sound, sign of very bad design and/or construction of the motor and gears.
I'm from Canada so it will be hassle to return them, for now I mount them outside of the cabinet on a timer and that helps to reduce the noise. Only time will tell if they are durable and can keep a consistent flow rate in the long term, but don't be fooled by the overall 5 star rating, they are nowhere near a well engineered product.
Excellent piece of equipment. By Donnie on 6/12/2017
Donnie would recommend this product to a friend
I would not hesitate to recommend! Better than I expected. No more worries.
Would recommend this prodeuct By Juken on 3/25/2017
Juken would recommend this product to a friend
Easy to use good quality. Bought 2 doser's and when calibrating found that both mine dose at 1.5 ml per minute. No big deal both are accurate and the same.
Constructed well By EAN on 3/15/2017
EAN would recommend this product to a friend
First, I must say that I love BRS customer service and their focus on customer satisfaction. The BRS doser is well made as far as construction and the pumping is on target at 1.8 ml. The problem I experienced was a knocking noise from inside of the pump. Customer service immediately sent another pump overnight. I give customer-service five stars, but only two for the the BRS doser. I worked for years in manufacturing and things will occur, despite using good QA measures, and the difference is in brand name and customer service.
Loved the idea By Ernest on 3/14/2017
Ernest wouldn't recommend this product to a friend
I love the BRS company and they stand behind their products much more than others in this game. Unfortunately, I have had some bad luck with this dosing pump. The first purchase had something rattling around inside and BRS offered an immediate replacement. The replacement made a loud knocking noise during the 10 minute run to determine my flow rate, which was 1.8.
I contacted BRS and was immediately sent another dosing pump. The replacement made the loud knocking noise immediately after setting up (flow rate was also 1.8). I plan to return the products and explore other dosing pumps BRS has available. I currently have a DOS, but needed an additional pump to daily.dose no pox. I currently manually dose mg, but plan to auto dose in the near future. The dosing demand for no pox and mg are low so another DOS is overkill cost-wise.
Again, I will mention that this issue is not reflective of other products I have purchased from BRS! However, please note the great customer-service I received that is bar-none to others in this hobby
Excellent dosing pump By William on 3/10/2017
William would recommend this product to a friend
The Doser work for me
BRS 2 post doser By Reefer on 3/9/2017
Reefer would recommend this product to a friend
Works great but only last about a year before the gears strip out. On my 3rd unit now but can't find a better deal so I guess it's okay.
Old Reliable. By Robert on 1/9/2017
Robert would recommend this product to a friend
I have had my pumps going on 5 years now. I use them to dose fertilizers for planted tank. Still going strong with original tubing. I only dose 1 ml per day. on each pump. Would definitely recommend.
Calibrate first. Closer to 2ml/minute rate By Biggen on 1/4/2017
Biggen would recommend this product to a friend
The pump is advertised as 1.1ml/minute dosing rate. However, in reality, mine is double that. I tested multiple 10 minute intervals and, each time, it doses about 1.9ml/minute or 19ml per 10 minute interval. This isn't big deal but I think they should change the product description to reflect its true dosing rate. I rate it 4 out of 5 stars because of this.
I'm happy with them By Dave on 12/11/2016
Dave would recommend this product to a friend
I use it with my Reef Keeper Plus and BRS soda ash and CaCl and I've been able to hit my targets easily.