DIY Ozone contact container

Aquanaut_Explorer · Feb 18, 2025

I'm making an ozone contact reactor where I'll bubble in the ozone. When the ozonated water leaves the contact reactor it will go into a media reactor filled with activated carbon to help destroy residual O3. Anyone have a working setup they'd be willing to show/describe?

Jay Hemdal · Feb 19, 2025

Marc316h said:
I'm making an ozone contact reactor where I'll bubble in the ozone. When the ozonated water leaves the contact reactor it will go into a media reactor filled with activated carbon to help destroy residual O3. Anyone have a working setup they'd be willing to show/describe?

IMO - the best contact tower is just a protein skimmer driving an ORP probe at the output for control. This gives a good reaction time, and then you can redirect the off-gas through the skimmer top, either outdoors, or through a carbon filter (I've used air mask carbon canisters for that). That keeps any free ozone out of your home's air (unless you are grossly over-dosing it).

Aquanaut_Explorer · Feb 19, 2025

Marc316h said:
I'm making an ozone contact reactor where I'll bubble in the ozone. When the ozonated water leaves the contact reactor it will go into a media reactor filled with activated carbon to help destroy residual O3. Anyone have a working setup they'd be willing to show/describe?

Thanks. I considered that route. Given that skimmers are short and fairly expensive I'm opting to create a 5 foot PVC tower and pump in O3 using a micro bubble disk. For O3, height of the contact vessel makes a difference for reaction and directly, ORP. I will have an activated carbon reactor at the tail end of the water flow to strip extra O3 (will check ORP here, after carbon). Bubbles will come out I know but those can disperse in the sump. For about $75 I can build the O3 contact vessel. I can then spend about $40 on a carbon reactor and put a few more $ in better pumps (water and air to drive the O3 generator). The ozone generator will only come on for about 30-45 min each night unless ORP is high... Then not on at all that night.