Jebao Programmable Auto Dosing Pump DP-4: Efficient and Flexible Black Dosing Pump Review

I bought this thing in January and after 3 months the first 2 pumps died! It was easy to set up and ready to use right out of the box. This thing worked great for the first 2 months and now it's complete garbage! The first pump was set at 97ml per hour and I thought that was too much for every day (I was right!). The 2nd pump was set to 8ml once a day which isn't much but it's dead. The 3rd pump was set to 10ml every 2 weeks and is still working. The fourth pump is set to 8ml every 30 days and…

so far very satisfied with this dispenser. I wanted something cheap for my 20g reverse/fragmented liner quarantine tank. It wasn't easy to calibrate to a 2mL per day dose; tried to calibrate to 100ml = 100ml and also 100ml = 2ml but each time it was 1ml overdose. Finally I calibrated to 100ml = 10ml and the dosage is accurate (I add "20ml" to get 2ml). If you have a large tank I think this will not be a problem. That's probably overkill for my setup, but I'm tired of dosing every day. This…

Excellent value for money. If you calibrate it properly IMHO it's worth every penny. They come pre-calibrated but may vary slightly depending on the fluids and tubing used. Just calibrated. Use a measuring cup with 100ml of the product you wish to dispense and the pre-cut length of tubing used. Then fill the test tubes with liquid in the manual feeding by pressing the left arrow. After that go to calibration, select the pump and start the calibration by pressing the up arrow. Once you have…

First of all, conclusion: everything is ok, and only ok, just a passable 3 stars. This can work well if you spend a lot of time making sure the pump is actually pumping the right amount of liquid. Because for me the error rate for the application is a bit high. Now the reason, good, "good" and "bad". Good: The price is not excessive for a device that does what it says on the tin and it pumps nutrients, or coral food, etc. OK/I can live with that: the instructions are clearly translated from…

First, the programming options are very limited. If you want to change the days, you need to set them to 23:59 and 00:01 every day. Since it was doable, I didn't get too angry. Then I discovered that only two of the four pumps were working. The last two made an odd noise but didn't pump the solution. The first pump only made a few drips so I had to remove the dial, make sure all the components were ok and finally found I had to loosen/disconnect the hose inside to make it work. Now after all…

Came today. Was very pleased that the original packaging was in perfect condition. Everything looks fine in the box, the product corresponds to the description. The tests will take place just after the weekend. Update: Exactly when calibrated well, stumbled across a Utube video from FishOfHex. He has probably the best video instructions on how to set up this unit, very easy to understand with his step by step guide on calibration, timing/schedule and final setup. Please note that when…

I think the pump is excellent. But only 4 stars because of that. The instructions ensure that each pump is calibrated using water as the calibration solution. Eh wrong answer. Let's say pump 1 is solution 1 and pump 4 is solution 4 (same for 2 and 3). Good. For each of your solutions, you have a different solution viscosity (thickness of the solution relative to the solids dissolved in the solution). This means if solution 1 has a different viscosity level than solutions 2-4 then you cannot…

Construction: Buttons, LCD and pump heads appear to be of good quality although the casing feels cheap. The socket on the device I received has poor contact and the device loses power if the cord is placed at the wrong angle. Mostly just annoying, since the device is attached to the tank stand. The cable that comes with the device also sticks straight out the back, so while the device itself is only about 6 inches deep, you'll need to allow for about an extra inch of connector spacing. A place…