Well, I just had a bout of ich, and needed to toss a heater in my 10g to get rid of it.
The only one I had I hand was 150w Ebo Jager that was way to long for the small tank.
I had been meaning to make a DIY Co2 reactor, and then I see this thread, so I combined the two.
Here is a picture of it on the side of my tank/table. I didn't bother tucking it away out of sight behind, as I am going to transfer this over to my 75g, and make another smaller one for this tank. I also plan on moving the co2 tank to the basement and plumping lines up through the floor to all the tanks.
It's "L" shaped, with Co2 coming in at the top, and the heater in the bottom leg. I used PVC compression fitting from Lowes that I had modified to fit into a 2 x 1-1/4" bushing.
The second pix shows the fitting after I did the mod.
The heater fits snuggly in this and the temp adjusting dial is right at the end. The third pix shows that.
All works extremely well, and the Co2 levels along with the tank temp are right there, quick and easy.
Thanks for all the great insperation from all the DIY'ers here.
ps: I have these modified fittings available if anyone is interested.
I also have some of the clear 2" PVC available.