The TS-2 denitrator is working. But it isnt big enough. It seems to be able to remove 30ppm of nitrates from 45 gallons of water a day.
It is sold for UP TO 400 gallons. Oops, I have 400 gallons and lots of food going in the system every day. The TS-3 for up to 1000 gallons was never put on clearance.
My nitrates have risen to about 50. I had to restart the Nopox. The cyano is returning.
I should have got 2 from the Marine Depot clearance. But I didnt. In fact there dont seem to be any anywhere now.
So I am making my own. These things sell for $300-$600, if I could find one. Seems a little much.
I did a little TLAR engineering with pencil and paper, read the DIY denitrator post and looked at how the TS-2 works.
Then I went to Lowes.
Dry fit up
4 x 24 inch PVC DWV pipe. I combined the designs of the DIY reactor and TS-2 while sticking to off the shelf parts and only needing simple hand tools. I drilled the holes with cheap spade bits for wood in my hand drill.
Holds 4.94 liters according to the calculator. I will put 4 liters of sulfur in and the rest will be aragonite. I have 8 pounds of sulfur prills coming and will mix in the Seachem Matrix I have here and top with the argonite media.
Sicce 1.5 pump for recirculation.
I am making spacers out of filter material I got from BRS.
The Inlet is above the pump on the suction side. The outlet is a fitting in the center of the top so gas vents out automatically.
The vinyl is so you can see the bubbles go by and that gives you some idea how it is working.
I am going to fasten it to a base made of 1 inch PVC board with nylon bolts to make it more stable. This will be heavy when filled.
The lid is a 4 inch clean out plug. I skipped the flange for simplicity.
I am going to connect it in series with the TS-2 at first to inoculate it. I am hoping it starts faster that way. I may leave it that way. That is what the TS-2 instructions say to do for multiple reactors.