How to build a calcium reactor probe holder bulkhead

dngspot · Dec 1, 2008

How to build a calcium reactor probe holder/bulkhead

I have just made a small mod to my calcium reactor. I have moved the PH probe to the second calcium chamber.
This will include a new DIY PH probe holder, which will have a quick release feature. It is made from a Guest fitting, that I got from Home Depot for less than $3.50. I picked up this idea from another site, I would like to give credit to who came up with this but do not remember who it is, or the site.

In this next pic you will see the material in the center of the fitting that must be removed. I used a 1/2 inch drill bit for this. I had to drill down about 1/2 of an inch and stopped when all of the material was removed. If you make one of these, you must be careful not to drill into the o-ring, seen in the third image. Drilling is done from the threaded side only. In the pic the center shadowed area is what is removed.

This pic shows the finished result.

This is the intended location of the probe fitting. I marked a spot through the fitting before drilling.

...the drilled and tapped hole.

...and the finished pic.

The next step is to plumb in the effluent line into the skimmer intake. This will help to remove co2 from the effluent.