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$15 electric vacuum pump for anyone!

A small (or even “mini” or “micro”) pump is enough for our purposes. The aquarium pump is a good example and there are many other small diaphragm air pumps that have an inlet and an outlet - so both vacuum and pressure so no modifications are required. Peristaltic pumps are better for fluid than air. High air volumes and low vacuums are not needed so save your money and avoid the expensive high performance pumps.

I’ve been using the 30/60 pump for about a year.

When I first started it was drawing 5hg, and now it draws 4.5hg.

I use the 30/60 for ten minutes, and then put my brake bleeder pump on, and I go up to 7hg for five minutes (a total of 15 minutes). I do that in the morning 3 times a day 4 days a week. I am getting some nice results with this routine. I just added the third time on a couple of weeks ago, and that is when I started to keep the gains for a day or two.

I just converted a Tetra AP150 pump [1] and all signs are looking great so far. I haven’t had any PE sessions with yet but that will change when the sun goes down later on today. I’ve converted several aquarium pumps and this one is the strongest yet pulling 8in.HG. The tetra AP150 pump features what Tetra calls deep water technology. I am not sure what this means but I can tell you there are 2 diaphragms with what appears to be dual check valves. All of which work in concert one diaphram pulls while the other does nothing.

Do any of you have any experience with this pump?

[1] Https://


Originally Posted by PatientlyGrowin
What store are you fellas getting those regular hand pumps with gauges at? Automotive stores? Or ordering from the internet?

In Canada it’s Princess Auto.

Increase vacuum

Am using the whisper 40 pump, 5.0 pressure .. Been using bout a year with 1 1/2 in. Cylinder. Anyway to increase more vacuum?

Originally Posted by truckman
… Anyway to increase more vacuum?

No, not that I know of. I have experimented with these aquarium pumps and the pump design is limited to about 5” Hg. You can increase the volume (amount of air moved) by connecting both inlets together with a “tee” fitting but this does not seem to increase the maximum amount of vacuum.

As an alternative, consider a 12 VDC air pump and 12 VDC power supply. You can add a motor control circuit and slow down the pump. Maximum vacuum is usually about 15”Hg BUT I do not recommend more than 5” Hg in order to avoid injury.

Definitely interested in getting an electric pump going for myself. I have a STJ that has the conversion kit from pumptoys on it. I’m about to buy a tetra pump, just curious all and all what is needed for sure.

I need tubing, a T bracket, the male coupler to attach to my jar and tubes, and what other suggestions?


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